2922
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 15
- Digital Root
- 6
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 3
Divisibility
- Divisor Count
- 8
- Divisor Sum
- 5856
- Proper Divisor Sum (Aliquot Sum)
- 2934
- 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
- 972
- Möbius Function
- -1
- Radical
- 2922
- 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
- no
- Harshad Number
- no
- Narcissistic Number
- no
- Collatz Steps
- 97
- 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
- Numbers k such that 45*2^k - 1 is prime.at n=41A002242
- Numbers that are the sum of 10 positive 6th powers.at n=38A003366
- Consider a 2-D cellular automaton generated by the Schrandt-Ulam rule of A170896, but confined to a semi-infinite strip of width n, starting with one ON cell at the top left corner; a(n) is the period of the resulting structure.at n=36A006447
- Coordination sequence T3 for Zeolite Code -WEN.at n=39A009864
- Coordination sequence T6 for Zeolite Code VNI.at n=33A009912
- Coordination sequence T7 for Zeolite Code VNI.at n=33A009913
- Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite RSN = RUB-17 K4Na12[Zn8Si28O72].18H2O starting with a T2 atom.at n=11A019219
- Numbers k such that Fibonacci(k) == -8 (mod k).at n=32A023166
- Convolution of A023532 and (F(2), F(3), F(4), ...).at n=15A023600
- a(n) = floor(floor(S3)/floor(S1)); where S3 and S1 are, respectively, the third and first elementary symmetric functions of {log(k)}, k = 1,2,...,n.at n=43A025210
- a(n) = floor(2nd elementary symmetric function of Sum_{j=1..k} 1/j, k = 1,2,...,n).at n=24A025212
- Number of distinct products ijk with 0 <= i < j < k <= n.at n=37A027429
- Numbers k such that Hofstadter Q-sequence Q(k) (A005185) satisfies Q(k) = k/2.at n=40A027619
- Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 18.at n=5A031696
- Number of days in n years (n=4 is the first leap year).at n=7A033171
- Number of days in n years (n=3 is the first leap year).at n=7A033172
- Number of days in n years (n=2 is the first leap year).at n=7A033173
- Number of days in n years (n=1 is the first leap year).at n=7A033174
- Coordination sequence T4 for Zeolite Code CFI.at n=36A033602
- Coordination sequence for Zeolite Code DFT.at n=37A038408