13374
domain: N
Properties
Digital Properties
- Digit Count
- 5
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 29016
- Proper Divisor Sum (Aliquot Sum)
- 15642
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 4452
- Möbius Function
- 0
- Radical
- 4458
- 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
- 50
- 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
- Smallest of 4 consecutive numbers each divisible by a square.at n=21A070284
- Interprimes which are of the form s*prime, s=18.at n=25A075293
- Number of n-digit base-6 deletable primes.at n=6A096239
- a(n) is the smallest number whose English name has the letter "f" in the n-th position, or -1 if no such number exists.at n=35A164794
- a(n) is the smallest number whose English name has the letter "r" in the n-th position, or -1 if no such number exists.at n=38A164796
- a(n) is the smallest number whose English name has the letter "u" in the n-th position, or -1 if no such number exists.at n=37A164797
- Number of n X 2 0..1 arrays with rows and columns lexicographically nondecreasing and every element equal to at least one horizontal or vertical neighbor.at n=43A201347
- Number of (n+2) X (7+2) 0..1 arrays with no 3 x 3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 3.at n=41A255800
- A000522(n+2)-A000522(n).at n=5A259104
- p-INVERT of the lower Wythoff sequence (A000201), where p(S) = 1 - S - S^2.at n=7A289925
- a(n) is the number of edges formed by n-secting the angles of a hexagon.at n=29A335735
- Numbers k such that k and k+4 are consecutive cubefree numbers.at n=6A349235
- The smallest of 3 consecutive integers such that the first is divisible by the square of a prime, the second is divisible by the cube of a prime, and the third is divisible by the fourth power of a prime.at n=7A349952
- Number of integer partitions of n whose product is a multiple of n + 1.at n=39A379320
- Array read by diagonals downwards: A(n,k) for n>=2 and k>=0 is the number of (n,k)-polyominoes.at n=48A381030
- Consecutive states of the linear congruential pseudo-random number generator (419*s + 6173) mod 29282 when started at s=1.at n=15A385036