3627
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
- 3
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 5824
- Proper Divisor Sum (Aliquot Sum)
- 2197
- 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
- 2160
- Möbius Function
- 0
- Radical
- 1209
- 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
- 56
- 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
- a(n) = (n-1)*n*(n+4)/6.at n=27A005581
- Coordination sequence T8 for Zeolite Code PAU.at n=44A008226
- a(n) = least m such that if r and s in {1/1, 1/3, 1/5, ..., 1/(2n-1)} satisfy r < s, then r < k/m < (k+2)/m < s for some integer k.at n=26A024841
- Values of Newton-Gregory forward interpolating polynomial (1/3)*(n-1)*(2*n+3)*(2*n-1).at n=14A030440
- Numbers k such that 29*2^k+1 is prime.at n=19A032364
- Numbers k such that 35*2^k+1 is prime.at n=19A032367
- Multiplicity of highest weight (or singular) vectors associated with character chi_28 of Monster module.at n=34A034416
- Number of partitions satisfying 0 < cn(0,5) + cn(2,5) + cn(3,5).at n=28A039899
- Denominators of continued fraction convergents to sqrt(335).at n=5A041633
- Nonprime numbers k such that sum of aliquot divisors of k is a cube.at n=23A048698
- Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 6 skipped primes.at n=25A050773
- Numbers k such that 8*10^k + R_k is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=9A056722
- Numbers n such that the trinomial x^n + x + 1 is irreducible over GF(5).at n=20A058334
- Number of primes below n^3 does not exceed n times the number of primes below n^2.at n=39A060304
- Product of all distinct numbers formed by permuting digits of n.at n=38A061147
- a(n) = n times R(n) where R(n) (A004086) is the digit reversal of n.at n=39A061205
- Product of all numbers formed by permuting the digits of n.at n=39A061378
- Product of the k numbers formed by cyclically permuting digits of n (where k = number of digits of n).at n=39A062003
- Numbers that are products of all rotations of some number.at n=48A062683
- Numbers whose decimal representations consist of nested and /or concatenated ordered pairs 0-9, 1-8, 2-7, 3-6 and 4-5.at n=31A065751