2023
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 7
- Digital Root
- 7
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 6
- Divisor Sum
- 2456
- Proper Divisor Sum (Aliquot Sum)
- 433
- 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
- 1632
- Möbius Function
- 0
- Radical
- 119
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 156
- 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
- no
- Odd
- yes
Appears in sequences
- Flavius Josephus's sieve: Start with the natural numbers; at the k-th sieving step, remove every (k+1)-st term of the sequence remaining after the (k-1)-st sieving step; iterate.at n=50A000960
- Numbers k such that k / (sum of digits of k) is a square.at n=47A001102
- Number of two-rowed partitions of length 3.at n=25A001993
- Number of certain self-avoiding walks with n steps on square lattice (see reference for precise definition).at n=13A002976
- Primes written in base 4.at n=33A004678
- Coordination sequence T2 for Zeolite Code AFY.at n=37A008030
- Coordination sequence T2 for Zeolite Code EMT.at n=37A008087
- Coordination sequence T2 for Zeolite Code LAU.at n=32A008125
- Coordination sequence T5 for Zeolite Code MEL.at n=29A008154
- Coordination sequence T1 for Zeolite Code TON.at n=28A008241
- a(n) = n^2 - 2.at n=44A008865
- Continued fraction for zeta(11).at n=1A013687
- Second term in continued fraction for zeta(n).at n=9A013697
- Records in A019294, number of iterations of the sigma function to reach a multiple of the starting value.at n=24A019277
- Numbers k such that k + sum of its prime factors = (k+1) + sum of its prime factors.at n=14A020700
- a(n) = n^2 - phi(n)*tau(n)^2.at n=48A022157
- n written in fractional base 4/2.at n=23A024630
- Jacobi polynomial P((1, 1), n, (1/2)).at n=6A025175
- Index of 6^n within the sequence of the numbers of the form 3^i*6^j.at n=49A025713
- 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 43.at n=15A031541