6248
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 20
- Digital Root
- 2
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 5
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 12960
- Proper Divisor Sum (Aliquot Sum)
- 6712
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 2800
- Möbius Function
- 0
- Radical
- 1562
- 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
- no
- Narcissistic Number
- no
- Collatz Steps
- 124
- 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 partitions into non-integral powers.at n=33A000148
- Expansion of 1/(1-x^8-x^9-x^10-x^11-x^12-x^13-x^14-x^15-x^16-x^17-x^18).at n=56A017876
- Least k>1 such that first n terms of Kolakoski sequence A000002 repeat in reverse order beginning at k-th term.at n=33A022295
- n written in fractional base 10/6.at n=48A024661
- Smallest k for which k, 2k, ... nk all contain the digit 4.at n=7A039935
- Composite numbers divisible by the palindromic sum of their prime factors (counted with multiplicity).at n=16A046358
- Ooguri-Vafa invariants of disk domain wall degeneracies for brane I in the O(K) -> P^1 X P^1 geometry.at n=1A061619
- Smallest of four consecutive integers divisible by four consecutive primes respectively.at n=37A072555
- Numbers n such that 9*2^(2*n-1) - 1 is prime.at n=28A091996
- Number of palindromes (in base 5) below 5^n.at n=9A117864
- Number of different values of i^2+j^2+k^2+l^2+m^2+n^2 for i,j,k,l,m,n in [0,n].at n=34A132438
- Triangle of numbers obtained from the partition array A134150.at n=31A134151
- Triangle of numbers obtained from the partition array A134150.at n=40A134151
- Number of errors that occur when choosing n as modulus in French INSEE code (0<n<100).at n=49A137385
- a(n) is the number of numbers removed in each step of Eratosthenes's sieve for 10!.at n=20A145537
- Number of walks within N^2 (the first quadrant of Z^2) starting and ending at (0,0) and consisting of n steps taken from {(-1, -1), (-1, 0), (0, -1), (1, 1)}.at n=11A151353
- Partial sums of near-repdigit primes A056710.at n=17A172983
- Number of line segments connecting exactly 9 points in an n x n grid of points.at n=32A177725
- Number of partitions of n containing a clique of size 9.at n=38A183566
- Molecular topological indices of the Mycielski graphs.at n=4A192834