12532
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 23716
- Proper Divisor Sum (Aliquot Sum)
- 11184
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 5760
- Möbius Function
- 0
- Radical
- 6266
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 125
- 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
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite WEI = Weinebeneite Ca4[Be12P8O32(OH)8].16H2O starting from a T2 atom.at n=13A019263
- Number of partitions satisfying (cn(2,5) = cn(3,5) and cn(2,5) <= cn(1,5) and cn(2,5) <= cn(4,5)).at n=49A036808
- Positive numbers having the same set of digits in base 7 and base 10.at n=35A037440
- 3*Fibonacci(n) - 11.at n=14A054968
- Numbers k such that k | sigma_8(k).at n=16A055712
- Number of 1's in all partitions of n with no even parts repeated.at n=31A117276
- a(0)=3; a(n) = n^2 + a(n-1) for n>0.at n=33A153057
- Number of nondecreasing integer sequences of length 8 with sum zero and sum of absolute values 2n.at n=17A158142
- a(n)^3 ends in n^3.at n=32A167178
- Number of ways to place n nonattacking composite pieces queen + leaper[1,4] on an n X n chessboard.at n=13A189865
- Numbers k such that the sum of the divisors of k and the sum of the distinct prime divisors of k are both a square.at n=17A194196
- Numbers n such that Bernoulli number B_{n} has denominator 1590.at n=17A272140
- a(n) = number of decimal digits of A007505(n).at n=37A275247
- Row sums of A285116: a(n) = 2 + Sum_{k=1..(n-1)} (C(n-1,k-1) bitwise-or C(n-1,k)), a(0) = 1, a(1) = 2.at n=14A285113