2044
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
- 1
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 4144
- Proper Divisor Sum (Aliquot Sum)
- 2100
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- yes
Derived Values
- Euler's Totient
- 864
- Möbius Function
- 0
- Radical
- 1022
- 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
- 63
- 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
- sigma_3(n): sum of cubes of divisors of n.at n=11A001158
- Number of unlabeled identity unit interval graphs.at n=12A005219
- Pseudo-bricks with n nodes.at n=4A006292
- 'Eban' numbers (the letter 'e' is banned!).at n=29A006933
- Coordination sequence T2 for Zeolite Code MFS.at n=28A008174
- Coordination sequence T4 for Zeolite Code SGT.at n=28A008232
- a(n) = floor( n*(n-1)*(n-2)/29 ).at n=40A011911
- Pseudoprimes to base 37.at n=36A020165
- Numbers k such that the continued fraction for sqrt(k) has period 32.at n=28A020371
- Triangle of the cube of the normalized, unsigned Stirling matrix of the first kind.at n=34A027478
- a(n) = n*(n^3 - 1)/2.at n=6A027482
- a(n) = 2^n - 4.at n=9A028399
- a(n) = Sum_{k divides 3^n} S(k), where S is the Kempner function A002034.at n=43A029714
- 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 22.at n=29A031520
- Fractional part of square root of a(n) starts with 2: first term of runs.at n=42A034108
- Sum of n-th powers of divisors of 12.at n=3A034660
- Numbers n with property that, reading binary expansion of n from right to left, run lengths strictly increase.at n=52A037015
- Expansion of (3 + x^2) / (1 - x)^4.at n=13A037237
- Number of forests of rooted trees where n dollars are spent and an n-node tree costs 2n-1 dollars.at n=18A038000
- Coordination sequence T2 for Zeolite Code ESV.at n=30A038410