12510
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 9
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 24
- Divisor Sum
- 32760
- Proper Divisor Sum (Aliquot Sum)
- 20250
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 3312
- Möbius Function
- 0
- Radical
- 4170
- Omega Function (Ω)
- 5
- Little Omega Function (ω)
- 4
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
- yes
- Harshad Number
- yes
- Narcissistic Number
- no
- Collatz Steps
- 112
- 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
- Numbers n such that n is a substring of its square in base 3 (written in base 10).at n=26A018827
- a(n) = floor(n^3 / Pi).at n=34A032633
- Replace n with concatenation of its divisors.at n=9A037278
- Numbers k such that sigma(k) divides sigma(sigma(k)).at n=40A066961
- Smallest multiple of n that begins with the concatenation of the divisors of n (in increasing order).at n=9A078218
- Numbers of the form p^3 + q^3, p, q primes.at n=38A086119
- Riordan array (1/sqrt(1-6x+5x^2),(1-3x-sqrt(1-6x+5x^2))/(2x)).at n=50A110165
- Sums of two distinct prime cubes.at n=31A120398
- Place n points on each of the three sides of a triangle, 3n points in all; a(n) = number of nondegenerate triangles that can be constructed using these points (plus the 3 original vertices) as vertices.at n=13A130748
- Sums of 2 cubes of distinct odd primes.at n=23A137632
- Nonprime concatenations of divisors of some k, ordered by k.at n=6A176556
- Numbers k such that k^2 +-11 are primes.at n=38A176683
- Numbers k such that k^3 +-7 are primes.at n=38A176685
- a(n) = n*(14*n-3).at n=30A185019
- Number of (w,x,y,z) with all terms in {1,...,n} and 3w=x+y+z+n+2.at n=36A212252
- Number of unlabeled graphs on n nodes whose components are cycles or complete graphs.at n=26A217067
- Numbers n such that n^8 + 1 and (n + 2)^8 + 1 are both prime.at n=31A217972
- Numbers k with the property that p = k^2 - 11 and q = k^2 + 11 are consecutive primes.at n=16A248790
- a(n) = n*(67*n - 89)/2.at n=20A263227
- Even numbers that are the sum of two odd prime cubes.at n=29A286836