4235
domain: N
Properties
Digital Properties
- Digit Count
- 4
- Digit Sum
- 14
- Digital Root
- 5
- Palindromic Number
- no
- Repdigit
- no
- Automorphic
- no
- Kaprekar Number
- no
- Multiplicative Persistence
- 2
Divisibility
- Divisor Count
- 12
- Divisor Sum
- 6384
- Proper Divisor Sum (Aliquot Sum)
- 2149
- 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
- 2640
- Möbius Function
- 0
- Radical
- 385
- 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
- 56
- 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
- a(n) = Sum_{k=0..n} ceiling(k^3/n).at n=24A014813
- Numbers k that divide s(k), where s(1)=1, s(j)=15*s(j-1)+j.at n=29A014865
- a(n) = a(n-1) + a(n-2) + 1, with a(0) = 1 and a(1) = 9.at n=14A022323
- Numerator of n*(n-3)*(3*n^2-6*n+2)/(3*(n-1)*(n-2)).at n=7A023417
- T(2n-1,n-2), T given by A026568.at n=6A026578
- a(n) = T(2*n-1, n-2), where T is given by A026584.at n=6A026594
- Number of connected functions on n points with a loop of length 2.at n=11A027852
- 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 13.at n=33A031511
- Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 13.at n=4A031691
- Rooted tree triangle read by rows: a(n,k) = number of forests with n nodes and k rooted trees.at n=67A033185
- Base-2 digital convolution sequence.at n=35A033639
- Numbers whose prime factors are in {5, 7, 11}.at n=30A036490
- Transformation of A036490: 5^a*7^b*11^c -> 5^a*7^floor((b+2)/2)*11^c.at n=30A036491
- Incrementally largest number of nonisomorphic finite Abelian groups as a function of order.at n=49A046054
- Odd numbers with exactly 4 palindromic prime factors (counted with multiplicity).at n=33A046374
- Coordination sequence T5 for Zeolite Code DON.at n=44A047957
- Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n-4)/2.at n=17A048067
- Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n+3)/3.at n=17A048089
- Number of positive integers <= 2^n of form 8 x^2 + 9 y^2.at n=16A054191
- A companion sequence to A011896.at n=40A055610