10925
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 14880
- Proper Divisor Sum (Aliquot Sum)
- 3955
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 7920
- Möbius Function
- 0
- Radical
- 2185
- 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
- 117
- 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
- Numbers whose base-2 representation has exactly 13 runs.at n=8A043580
- a(n) = Fibonacci(n) - n.at n=21A065220
- Smallest of 4 consecutive numbers each divisible by a square.at n=19A070284
- Numbers n such that C(4n,n)/(3n+1) (A002293) is not divisible by 4.at n=30A078971
- a(n) = (7 - 4*(-2)^n)/3.at n=13A083594
- a(n) = index of the first occurrence of n in A088606.at n=34A088757
- Triangle of sums of Jacobsthal numbers related to binomial(4n,n)/(3n+1) mod 4.at n=22A113049
- a(n) = numerator of b(n), where b(1) = 1, b(n+1) = Sum_{k=1..n} b(k)^((-1)^(n-k+1)).at n=7A115601
- a(n) = denominator of b(n), where b(1) = 1, b(n+1) = Sum_{k=1..n} b(k)^((-1)^(n-k+1)).at n=8A115602
- Partial sums of A130707.at n=14A130759
- Sum of the distinct prime factors of 2^n-1.at n=26A152057
- Jacobsthal numbers A001045 incremented by 2.at n=15A153643
- First differences of A135351.at n=17A155980
- The maximal coefficient of (1+x)*(1+x^4)*(1+x^9)*...*(1+x^(n^2)).at n=24A160235
- Number of partitions of n with distinct occurrences of parts.at n=48A166239
- Multiples of 23 whose digit reversal - 1 is also a multiple of 23.at n=19A166400
- Third entry in row n of triangle in A169950.at n=21A169953
- a(n) = (2*2^n+7*(-1)^n)/3.at n=14A171382
- a(n) = Fibonacci(n+8) - Fibonacci(8).at n=13A180673
- s(k)-s(j), where the pairs (k,j) are given by A205852 and A205853, and s(k) denotes the (k+1)-st Fibonacci number.at n=28A205854