5904
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 18
- Digital Root
- 9
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 1
Divisibility
- Divisor Count
- 30
- Divisor Sum
- 16926
- Proper Divisor Sum (Aliquot Sum)
- 11022
- Abundant Number
- yes
- Perfect Number
- no
- Deficient Number
- no
- Highly Composite
- no
- Weird Number
- no
- Untouchable Number
- no
- Primitive Abundant
- no
Derived Values
- Euler's Totient
- 1920
- Möbius Function
- 0
- Radical
- 246
- Omega Function (Ω)
- 7
- 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
- yes
- Narcissistic Number
- no
- Collatz Steps
- 23
- 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
- Coordination sequence T1 for Zeolite Code CAS.at n=47A008063
- Number of points on surface of 4-dimensional cube.at n=9A008511
- a(n) = 10^n - n^6.at n=4A024120
- Exactly half of first a(n) terms of A022300 are 1's (not known to be infinite).at n=0A025513
- Numbers k such that k divides the (left) concatenation of all numbers <= k written in base 25 (most significant digit on right and removing all least significant zeros before concatenation).at n=10A029542
- Every run of digits of n in base 3 has length 2.at n=24A033001
- Numbers whose base-3 representation contains exactly four 0's and four 2's.at n=25A045013
- a(0) = 0; for n>0, a(n) = maximal number of regions into which space can be divided by n spheres.at n=27A046127
- Number of self-avoiding walks of length n on the Laves graph.at n=12A046944
- a(n) = Sum_{h=0..n, k=0..n} T(h,k), array T counting knights' moves as in A049604.at n=24A047881
- Numbers n such that n^2 contains exactly 8 different digits.at n=31A054036
- Triangular array generated by its row sums: T(n,0)=1 for n >= 1, T(n,1)=r(n-1), T(n,k)=T(n,k-1)+r(n-k) for k=2,3,...,n, n >= 2, r(h)=sum of the numbers in row h of T.at n=32A054115
- Subdiagonal T(n,n-3), array T as in A054115.at n=4A054118
- Numbers k such that 2^k - 17 is prime.at n=28A059611
- Integer part of log(n!)^(1 + log(log(1 + n))).at n=23A062475
- Smallest member of triple of consecutive numbers each of which is the sum of two different nonzero squares.at n=29A064715
- Smallest member of three consecutive numbers each of which is the sum of two nonzero squares (not necessarily different).at n=34A064716
- Lesser of three consecutive nonsquare integers each of which is the sum of two squares.at n=27A073412
- Trajectory of 77 under the Reverse and Add! operation carried out in base 2.at n=9A075253
- Sod_4 - sod_3 + sod_2 - sod_1, where sod_k is the sum of k-th powers of digits of n.at n=9A076160