Properties of the Number 18265

Eighteen Thousand Two Hundred Sixty-Five

Basics

Value: 18264 → 18265 → 18266

Parity: odd

Prime: No

Previous Prime: 18257

Next Prime: 18269

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 13 × 281

Divisors: 1, 5, 13, 65, 281, 1405, 3653, 18265

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100011101011001

Octal: 43531

Duodecimal: A6A1

Hexadecimal: 4759

Square: 333610225

Square Root: 135.14806694880988

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

Number of compositions of n with strictly increasing differences. A325547

Number of binary strict trees of weight n. A300442

a(n) + a(n+1) + a(n+2) = n³. A152728

a(n) is the numerator of the real part of ∏_k=1..n (1/k + i) where i is the imaginary unit. A370547

a(n) is the numerator of the imaginary part of ∏_k=1..n (1 + i/k) where i is the imaginary unit. A370553

a(n) = A000041(n) + n·A032741(n). A168015

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted then there are a pair of central terms both equal to 9. A31422

Number of (w,x,y) with all terms in {0,...,n} and x ≠ max(|w-x|,|x-y|). A213496

Number of numbers with sum of digits n in fractional base 4/3. A364780

Coordination sequence for α-Mn, Position Mn2. A9951