1076
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 1890
- Proper Divisor Sum (Aliquot Sum)
- 814
- Abundant Number
- no
- Perfect Number
- no
- Deficient Number
- yes
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 536
- Möbius Function
- 0
- Radical
- 538
- Omega Function (Ω)
- 3
- 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
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 31
- 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
- Partial sums of (unordered) ways of making change for n cents using coins of 1, 2, 5, 10 cents.at n=31A000064
- a(0) = 1, a(1) = 4, and a(n) = a(n-1) + a(n-2) for n >= 2.at n=13A000285
- Primes multiplied by 4.at n=56A001749
- a(n) = least value of m for which Liouville's function A002819(m) = -n.at n=30A002053
- Positions of remoteness 5 in Beans-Don't-Talk.at n=33A005697
- Coefficients of the '2nd-order' mock theta function A(q).at n=23A006304
- Number of rotationally symmetric polyominoes with n cells (that is, polyominoes with exactly the symmetry group C_2 generated by a 180-degree rotation).at n=13A006747
- Discriminants of totally real cubic fields.at n=28A006832
- Coordination sequence T2 for Zeolite Code EAB and OFF.at n=24A008083
- Coordination sequence T6 for Zeolite Code MEL.at n=21A008155
- Coordination sequence T6 for Zeolite Code MFI.at n=21A008169
- Coordination sequence T7 for Zeolite Code PAU.at n=24A008225
- Molien series for A_9.at n=24A008632
- Number of partitions of n into at most 9 parts.at n=24A008638
- Numbers n such that n^2 and n have same last 2 digits.at n=43A008852
- Number of 5-tuples of different integers from [ 1,n ] with no common factors among pairs.at n=21A015698
- Number of 5-tuples of different integers from [ 2,n ] with no common factors among pairs.at n=21A015699
- Phi(n) + 6 | sigma(n + 6).at n=45A015785
- Numbers k such that phi(k) + 10 | sigma(k + 10).at n=29A015789
- Coordination sequence T7 for Zeolite Code TER.at n=22A016439