17602
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 28476
- Proper Divisor Sum (Aliquot Sum)
- 10874
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 8112
- Möbius Function
- -1
- Radical
- 17602
- Omega Function (Ω)
- 3
- 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
- 79
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- 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
- a(0) = 1, a(n) = 11*n^2 + 2 for n>0.at n=40A010003
- Number of connected functions on n points with a loop of length 4.at n=10A029853
- a(n) = n^3 + n.at n=26A034262
- Number of 4-element ordered antichain covers of an unlabeled n-element set.at n=3A056090
- a(n) = n*(n^2 + 1) if n is even, otherwise (n - 1/2)*(n^2 + 1).at n=26A071289
- First differences of A084449.at n=32A084465
- a(n) = n^3 plus sum of digits of n^3.at n=25A123135
- a(n) = n + [n^2 if n is odd or n^3 if n is even].at n=25A181427
- Number of n X 2 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing.at n=24A229439
- Indices of primes in the hexanacci numbers sequence A000383.at n=27A247192
- Numbers n such that 7^n-6^(n-1) is prime.at n=16A273524
- a(n) = Sum_{k=1..n} k * A088370(n,k).at n=40A309371
- Maximal number of root ancestral configurations among matching gene trees and species trees with n leaves.at n=23A355108
- Square array read by ascending antidiagonals: T(n,k) = 1/n * [x^k] 1/((1 - x)*(1 - x^2))^(n*k) for n, k >= 1.at n=26A363419
- Number of compositions of n into powers of two that each divide the sum of previous powers.at n=24A375492
- Number of compositions of n into powers of two that each divide the sum of previous powers.at n=25A375492
- Numbers k such that k = m*(m^2 + 1) where m^2 + 1 is prime.at n=9A382617