2923
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 16
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 4
- Divisor Sum
- 3040
- Proper Divisor Sum (Aliquot Sum)
- 117
- 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
- 2808
- Möbius Function
- 1
- Radical
- 2923
- Omega Function (Ω)
- 2
- 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
- 141
- Smith Number
- no
- Vampire Number
- no
Primality
- Prime
- no
- Composite Number
- yes
- Semiprime
- yes
- 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
- no
- Odd
- yes
Appears in sequences
- List of pairs of primes in reverse order.at n=4A007797
- Coordination sequence T3 for Zeolite Code AFR.at n=41A008021
- Coordination sequence T2 for Zeolite Code YUG.at n=35A008248
- Expansion of 1/(1-x^7-x^8-x^9-x^10-x^11-x^12-x^13-x^14).at n=49A017863
- Numbers k such that the period of the continued fraction for sqrt(k) contains exactly nine 1's.at n=5A020445
- Convolution of A023532 and Fibonacci numbers.at n=16A023596
- a(n) = position of n^2 + (n+1)^2 + (n+2)^2 in A004432.at n=33A024809
- (d(n)-r(n))/5, where d = A026046 and r is the periodic sequence with fundamental period (1,0,4,0,0).at n=31A026048
- Lucky numbers with size of gaps equal to 10 (upper terms).at n=31A031893
- Lucky numbers with size of gaps equal to 20 (lower terms).at n=2A031902
- a(n) = n*(2*n+5).at n=37A033537
- Coordination sequence T2 for Zeolite Code TSC.at n=45A033617
- Becomes prime after n iterations of f(x) = phi(x)+1 (least inverse of A039651).at n=10A039652
- Numbers having three 5's in base 8.at n=18A043443
- Numbers n such that string 0,7 occurs in the base 9 representation of n but not of n-1.at n=38A044258
- Numbers n such that string 2,3 occurs in the base 10 representation of n but not of n-1.at n=32A044355
- Numbers n such that string 0,7 occurs in the base 9 representation of n but not of n+1.at n=38A044639
- Numbers n such that string 2,3 occurs in the base 10 representation of n but not of n+1.at n=32A044736
- Discriminants of imaginary quadratic fields with class number 6 (negated).at n=46A046003
- Number of partitions of n with equal number of parts congruent to each of 0, 1 and 3 (mod 4).at n=46A046767