12104
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 8
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 24300
- Proper Divisor Sum (Aliquot Sum)
- 12196
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 5632
- Möbius Function
- 0
- Radical
- 3026
- Omega Function (Ω)
- 5
- 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
- 68
- 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 multigraphs with 4 nodes and n edges.at n=29A003082
- Number of ways in which n identical balls can be distributed among 4 boxes in a row such that each pair of adjacent boxes contains at least 4 balls.at n=33A005337
- Numbers that are the sum of 3 positive cubes in exactly 3 ways.at n=2A025397
- Numbers that are the sum of 3 positive cubes in 3 or more ways.at n=2A025398
- Numbers that are the sum of 3 distinct positive cubes in exactly 3 ways.at n=2A025401
- Numbers that are the sum of 3 distinct positive cubes in 3 or more ways.at n=2A025402
- a(n) = dot_product(1,2,...,n)*(4,5,...,n,1,2,3).at n=30A026040
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 55.at n=20A031553
- Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 55.at n=1A031733
- Number of ternary rooted trees with n nodes and height at most 5.at n=17A036373
- Number of 4-ary rooted trees with n nodes and height at most 6.at n=14A036611
- Numbers k such that 20*R_k + 9 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=11A056678
- Nearest integer to log(n^n)^(1 + log(log(1 + n))).at n=23A062480
- Multiples of 8 with digit sum 8.at n=35A069543
- 3-apexes of Omega: numbers k such that Omega(k-3) < Omega(k-2)< Omega(k-1) < Omega(k) > Omega(k+1) > Omega(k+2) > Omega(k+3), where Omega(m) = the number of prime factors of m, counting multiplicity.at n=3A076760
- Numbers k such that (k / sum of digits of k) and (k+1 / sum of digits of k+1) are both semiprime.at n=18A085774
- Number of square plane partitions of n.at n=32A089299
- Exponents k such that the sum of decimal digits of 2^k is also a power of 2.at n=18A095412
- Structured pentagonal hexacontahedral numbers (vertex structure 10).at n=7A100170
- Number of non-intersecting cycle systems in a particular directed graph.at n=10A114300