2422
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 10
- Digital Root
- 1
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 4176
- Proper Divisor Sum (Aliquot Sum)
- 1754
- 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
- 1032
- Möbius Function
- -1
- Radical
- 2422
- Omega Function (Ω)
- 3
- 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
- yes
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 71
- 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
- Number of partitions of n into 3 or more parts.at n=25A004250
- Coefficients of modular function G_3(tau).at n=28A005761
- Number of rooted planar maps with 4 faces and n vertices and no isthmuses.at n=5A006468
- Coordination sequence T2 for Zeolite Code LAU.at n=35A008125
- Coordination sequence T1 for Zeolite Code PAU.at n=36A008219
- Coordination sequence T7 for Zeolite Code PAU.at n=36A008225
- Coordination sequence T2 for feldspar.at n=33A008255
- Expansion of tan(tan(x).exp(x)).at n=6A009704
- Coordination sequence T4 for Zeolite Code RSN.at n=32A009888
- Coordination sequence for CaF2(2), F position.at n=22A009925
- a(0) = 1, a(n) = 5*n^2 + 2 for n>0.at n=22A010001
- a(0) = 1, a(n) = 20*n^2 + 2 for n>0.at n=11A010010
- Numbers n such that phi(n) | sigma_7(n).at n=53A015765
- Coordination sequence T6 for Zeolite Code TER.at n=33A016438
- Numbers k such that the continued fraction for sqrt(k) has period 32.at n=35A020371
- Expansion of 1/((1-x)(1-2x)(1-3x)(1-11x)).at n=3A021054
- a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = A014306, t = (primes).at n=43A024696
- Numbers that are the sum of 4 positive cubes in exactly 3 ways.at n=10A025405
- Numbers that are the sum of 4 positive cubes in 3 or more ways.at n=11A025407
- Numbers that are the sum of 4 distinct positive cubes in exactly 2 ways.at n=33A025409