2564
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
- 2
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 4494
- Proper Divisor Sum (Aliquot Sum)
- 1930
- 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
- 1280
- Möbius Function
- 0
- Radical
- 1282
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 53
- 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
- Numbers that are the sum of 9 positive 9th powers.at n=5A003398
- a(n) = floor(1000*log(n)).at n=12A004240
- Numbers that are the sum of at most 9 positive 9th powers.at n=44A004893
- Number of quasi-orders with n elements.at n=7A006870
- Coordination sequence T1 for Zeolite Code AET.at n=35A008007
- Coordination sequence T3 for Zeolite Code CAS.at n=31A008065
- Coordination sequence T1 for Zeolite Code MEP.at n=30A008157
- Coordination sequence T2 for Zeolite Code PAU.at n=37A008220
- Coordination sequence T4 for Zeolite Code -CLO.at n=44A009853
- Coordination sequence T4 for Zeolite Code RTH.at n=35A009896
- a(n) = floor( n*(n-1)*(n-2)/14 ).at n=34A011896
- Coordination sequence T5 for Zeolite Code CGF.at n=35A019455
- Numbers k such that the continued fraction for sqrt(k) has period 50.at n=6A020389
- Every prefix prime in base 7 (written in base 7).at n=14A024767
- Number of partitions of n into distinct parts >= 3.at n=58A025148
- Number of n-move bishop paths on 8x8 board from given corner to same corner.at n=5A025593
- Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 24.at n=39A031522
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 28 ones.at n=12A031796
- Position of first occurrence of n in the continued fraction for the Euler-Mascheroni constant (gamma).at n=45A033149
- Concatenations of two squares in two ways.at n=4A038670