9628
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 25
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 17640
- Proper Divisor Sum (Aliquot Sum)
- 8012
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4592
- Möbius Function
- 0
- Radical
- 4814
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 3
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- no
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- no
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 73
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- no
- Prime Power
- no
- Prime Factorization
- no
- Twin Prime
- no
- Mersenne Prime
- no
- Sophie Germain Prime
- no
- Safe Prime
- no
- Powerful Number
- no
- Achilles Number
- no
- Perfect Power
- no
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Number of partitions of n that do not contain 4 as a part.at n=36A027338
- Starting from generation 7 add previous and next term yielding generation 8.at n=20A048454
- Integers n > 1997 such that the 'Reverse and Add!' trajectory of n joins the trajectory of 1997.at n=23A063055
- Least k such that k*n^n +/- 1 are twin primes.at n=38A076810
- Number of binary strings of length n with equal numbers of 00011 and 11100 substrings.at n=14A164234
- The number of partitions of n in which the first part is at least four times larger than the second part.at n=50A186445
- Number of 3-step left-handed knight's tours (moves only out two, left one) on an n X n board summed over all starting positions.at n=30A187173
- Numbers which, when divided by the sum of their prime factors, give a prime number.at n=35A199013
- Integer nearest to Li(10^n) - Li(3), where Li(x) = integral(0..x, dt/log(t)).at n=4A223166
- Number of (n+1) X (1+1) 0..2 arrays with the maximum plus the minimum of every 2 X 2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=4A237227
- Number of (n+1)X(5+1) 0..2 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=0A237231
- T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=10A237234
- T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.at n=14A237234
- Zeroless numbers n whose digit product squared is equal to the digit product of n^2.at n=8A256115
- Bihappy numbers: numbers that reach 1 under iteration of the sum-of-squares-of-two-digits map s_2.at n=30A257795
- Number of binary strings of length n+3 such that the smallest number whose binary representation is not visible in the string is 5.at n=13A261441
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 337", based on the 5-celled von Neumann neighborhood.at n=23A271287
- Number of senary sequences of length n such that no two consecutive terms have distance 1.at n=6A287806
- Number of minimal total dominating sets in the n-antiprism graph.at n=11A302763
- Numbers k such that 385*2^k+1 is prime.at n=31A322998