Properties of the Number 18479

Eighteen Thousand Four Hundred Seventy-Nine

Basics

Value: 18478 → 18479 → 18480

Parity: odd

Prime: No

Previous Prime: 18461

Next Prime: 18481

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 17 × 1087

Divisors: 1, 17, 1087, 18479

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 100100000101111

Octal: 44057

Duodecimal: A83B

Hexadecimal: 482f

Square: 341473441

Square Root: 135.93748563218315

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

Descending dungeons: see Comments lines for definition. A121263

a(n) = n!*∑_d∣n (-1)^d+1/d!. A132958

The r-th term of the n-th row of the following array contains the sum of r successively decreasing integers beginning from n. 0 < r <= n. Sequence contains the leading diagonal. A110427

From the coefficients (times n!) of the expansion of the ∑_k>=1 cos(x^k). A176474

a(n) is the least number whose sum of digits in primorial base equals n. A343048

a(n) = ∑_{k=0..floor(n/3)} binomial(n,k) * binomial(n-k-1,n-3·k). A389327

Numbers k such that A055079(k) = 2^k. A57838

a(n) = A126098(n) - 1. A117010

a(n) = 64·n² - n. A157948

a(n) = 289·n² - 17. A158587