3136
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 13
- Digital Root
- 4
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 21
- Divisor Sum
- 7239
- Proper Divisor Sum (Aliquot Sum)
- 4103
- 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
- 1344
- Möbius Function
- 0
- Radical
- 14
- Omega Function (Ω)
- 8
- Little Omega Function (ω)
- 2
Special
- Factorial
- no
- Catalan Number
- no
- Bell Number
- no
- Motzkin Number
- no
- Primorial
- no
Figurate Numbers
- Fibonacci Number
- no
- Triangular Number
- no
- Perfect Square
- yes
- Perfect Cube
- no
- Pentagonal Number
- no
- Hexagonal Number
- no
- Lucas Number
- no
- Tetrahedral Number
- no
- Pell Number
- no
- Tribonacci Number
- yes
- Pronic Number
- no
Recreational
- Happy Number
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 30
- 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
- yes
- Achilles Number
- no
- Perfect Power
- yes
- Smooth Number
- no
- Carmichael Number
- no
Classification
- Even
- yes
- Odd
- no
Appears in sequences
- Tribonacci numbers: a(n) = a(n-1) + a(n-2) + a(n-3) for n >= 3 with a(0) = a(1) = 0 and a(2) = 1.at n=16A000073
- Number of ways of writing n as a sum of 8 squares.at n=6A000143
- Squares that are not the sum of 2 nonzero squares.at n=33A000548
- Squares of tetrahedral numbers: a(n) = binomial(n+3,n)^2.at n=5A001249
- Squares of partition numbers.at n=11A001255
- Numbers of form 2^i*7^j, with i, j >= 0.at n=32A003591
- a(n) = ceiling(1000*log(n)).at n=22A004242
- Theta series of 14-dimensional unimodular lattice (E7+E7)+.at n=3A004535
- a(n) = 10*n^3 - 6*n^2.at n=7A006592
- Coordination sequence T7 for Zeolite Code MEL.at n=36A008156
- a(n) = floor(n/4)*floor((n+1)/4)*floor((n+2)/4)*floor((n+3)/4).at n=30A008233
- floor(n/5)*floor((n+1)/5)*floor((n+2)/5)*floor((n+3)/5).at n=38A008381
- Theta series of D_8 lattice.at n=3A008430
- Square the entries of Pascal's triangle.at n=41A008459
- Square the entries of Pascal's triangle.at n=39A008459
- Triangle of coefficients in expansion of (2 + 7*x)^n.at n=29A013623
- Numbers that are not the sum of a square and a prime.at n=45A014090
- Expansion of (1 + 2*x)/(1 - 2*x)^3.at n=6A014477
- Squares of elements in Pascal triangle (by row) that are not 1.at n=25A014719
- Squares of elements in Pascal triangle (by row) that are not 1.at n=23A014719