6290
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 17
- Digital Root
- 8
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 16
- Divisor Sum
- 12312
- Proper Divisor Sum (Aliquot Sum)
- 6022
- 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
- 2304
- Möbius Function
- 1
- Radical
- 6290
- Omega Function (Ω)
- 4
- Little Omega Function (ω)
- 4
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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 62
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- no
- Squarefree Number
- yes
- 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
- Molien series for alternating group Alt_12 (or A_12).at n=32A008635
- Number of partitions of n into at most 12 parts.at n=32A008641
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = A000201 (lower Wythoff sequence).at n=27A025113
- Numbers that are the sum of 2 nonzero squares in exactly 4 ways.at n=30A025287
- Numbers that are the sum of 2 nonzero squares in 4 or more ways.at n=31A025295
- Numbers that are the sum of 2 distinct nonzero squares in exactly 4 ways.at n=30A025305
- Numbers that are the sum of 2 distinct nonzero squares in 4 or more ways.at n=31A025314
- a(n) = (d(n)-r(n))/2, where d = A026066 and r is the periodic sequence with fundamental period (1,0,0,0).at n=30A026067
- Base-9 palindromes that start with 8.at n=16A043035
- Length of hypotenuse squared in right triangle formed by a prime spiral plotted in Cartesian coordinates.at n=16A048851
- Denominators of row 4 of table described in A051714/A051715.at n=32A051723
- Expansion of (1-x)/(1 - x - 2*x^3 + x^4).at n=23A052916
- Second 11-gonal (or hendecagonal) numbers: a(n) = n*(9*n+7)/2.at n=37A062728
- The prime then composite recurrence; a(2n) = a(2n-1)-th prime and a(2n+1) = a(2n)-th composite and a(1) = 1.at n=10A064960
- a(n) = Sum_{d|n} sigma(d)^2.at n=29A065018
- a(n) = prime(n+1)^2 + prime(n)^2.at n=15A069484
- a(n) = Sum_{d|n} sigma(n*d).at n=29A069546
- Number of polyiamonds with n cells without holes that do not tile the plane.at n=12A071334
- Squarefree numbers having exactly three prime gaps.at n=30A073489
- Numbers having exactly three prime gaps in their factorization.at n=35A073495