2277
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 4
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 3744
- Proper Divisor Sum (Aliquot Sum)
- 1467
- 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
- 1320
- Möbius Function
- 0
- Radical
- 759
- 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
- no
- Narcissistic Number
- no
- Collatz Steps
- 58
- 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
- no
- Odd
- yes
Appears in sequences
- Number of nonisomorphic minimal triangle graphs.at n=10A000080
- Coefficient of x^5 in expansion of (1 + x + x^2)^n.at n=8A000574
- Degrees of irreducible representations of Mathieu group M_24.at n=19A003859
- Degrees of irreducible representations of Conway group Co2.at n=6A003911
- Number of n-bead bracelets (turnover necklaces) of two colors with 6 red beads and n-6 black beads.at n=17A005513
- a(n) = (n-1)*n*(n+4)/6.at n=23A005581
- a(n) is the smallest positive number such that the sum of A001032(n) consecutive squares starting with a(n)^2 is a square.at n=34A007475
- Coordination sequence T1 for Zeolite Code AWW.at n=34A008045
- a(n) = n*(2*n + 3).at n=33A014106
- Partial sums of primes, if 1 is regarded as a prime (as it was until quite recently, see A008578).at n=35A014284
- Number of ordered 5-tuples of integers from [ 1,n ] with no common factors among quadruples.at n=10A015653
- a(n) = T(n,[ n/2 ]), where T is the array in A026323.at n=11A026336
- Number of partitions of n that do not contain 2 as a part.at n=31A027336
- 9 times the triangular numbers A000217.at n=22A027468
- a(n) = T(2*n+1,n), with T given by A027907.at n=5A027911
- T(n,[ n/2 ]), T given by A027907.at n=11A027913
- Odd elements in the 5-Pascal triangle A028313.at n=61A028315
- Odd elements in the 5-Pascal triangle A028313.at n=62A028315
- Odd elements in the 5-Pascal triangle A028313 that are not 1.at n=36A028316
- Odd elements in the 5-Pascal triangle A028313 that are not 1.at n=35A028316