16479
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 27
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 23816
- Proper Divisor Sum (Aliquot Sum)
- 7337
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 10980
- Möbius Function
- 0
- Radical
- 5493
- Omega Function (Ω)
- 3
- Little Omega Function (ω)
- 2
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
- 159
- 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
- no
- Odd
- yes
Appears in sequences
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RTH = RUB-13 [B2Si30O64].2R starting with a T2 atom.at n=13A019227
- Numbers n such that 175*2^n-1 is prime.at n=24A050839
- Numbers k such that the sum of the digits of (k^k + k!) is divisible by k.at n=20A109663
- Number of nonnegative integer arrays of length n+2 with new values 0 upwards introduced in order, no three adjacent elements equal, and containing the value 2.at n=6A211829
- T(n,k)=Number of nonnegative integer arrays of length n+k+1 with new values 0 upwards introduced in order, no three adjacent elements equal, and containing the value k+1.at n=27A211836
- Number of nonnegative integer arrays of length n+8 with new values 0 upwards introduced in order, no three adjacent elements equal, and containing the value n+1.at n=0A211841
- Minimal number (in decimal representation) with n nonprime substrings in base-4 representation (substrings with leading zeros are considered to be nonprime).at n=29A217104
- Number of distinct characteristic polynomials of trees with n nodes.at n=16A226594
- G.f.: x^(k^2)/(mul(1-x^(2*i),i=1..k)*mul(1+x^(2*r-1),r=1..oo)) with k=4.at n=54A246580
- Irregular triangle read by rows: coefficients of polynomials related to Stirling permutations.at n=40A256978
- Irregular triangle read by rows: coefficients of polynomials related to Stirling permutations.at n=44A256978
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 878", based on the 5-celled von Neumann neighborhood.at n=34A273741