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Properties of the Number 18232

Eighteen Thousand Two Hundred Thirty-Two

Basics

Value: 18231 → 18232 → 18233

Parity: even

Prime: No

Previous Prime: 18229

Next Prime: 18233

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 3 × 43 × 53

Divisors: 1, 2, 4, 8, 43, 53, 86, 106, 172, 212

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011100111000

Octal: 43470

Duodecimal: A674

Hexadecimal: 4738

Square: 332405824

Square Root: 135.025923436946

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

T(n,k) = Number of length n+3 0..k arrays with no four consecutive terms having the sum of any three elements equal to three times the fourth. A249290
a(n) = sum of all divisors of all positive integers <= prime(n). A244583
4 times heptagonal numbers: a(n) = 2·n*(5·n-3). A153784
Sophie Germain 5-almost primes. A211162
Consider any concatenation of the type n = concat(a,b). Sequence lists numbers that are the sum of the products of some of such couples a and b. A265737
a(n) = (2·n-1)*a(n-1) + (n-1)*a(n-2) with a(0) = a(1) = 1. A247249
Coordination sequence for α-Mn, Position Mn4. A9953
Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 21 ones. A31789
Number of length n+3 0..2 arrays with no four consecutive terms having the sum of any three elements equal to three times the fourth. A249284
Number of length 7+3 0..n arrays with no four consecutive terms having the sum of any three elements equal to three times the fourth. A249297