Properties of the Number -20498

Twenty Thousand Four Hundred Ninety-Eight

Basics

Value: -20499 → -20498 → -20497

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 37 × 277

Divisors: 1, 2, 37, 74, 277, 554, 10249, 20498

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -101000000010010

Octal: -50022

Duodecimal: -BA42

Hexadecimal: -5012

Square: 420168004

Square Root: 143.17122615944868

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

Maximum starting value of X such that repeated replacement of X with X-ceiling(X/6) requires n steps to reach 0. A279076

Numbers n such that 1n1, 3n3, 7n7 and 9n9 are all primes. A59677

Number of paths from (0,0) to (n,n) avoiding 4 or more consecutive east steps and 4 or more consecutive north steps. A177792

Number of (n+2) X (2+2) 0..3 arrays with every 3 X 3 subblock row and column sum not 2 3 6 or 7 and every diagonal and antidiagonal sum 2 3 6 or 7. A251888

Number of (n+2) X (2+2) 0..3 arrays with every 3 X 3 subblock row and column sum not equal to 0 2 3 6 or 7 and every 3 X 3 diagonal and antidiagonal sum equal to 0 2 3 6 or 7. A252258

a(n) = ∑_k=1..n k²*tau₃(k), where tau₃ is A007425. A319088

a(n) = ∑_k=1..n τ(gcd(k,n))^n/gcd(k,n), where τ(n) is the number of divisors of n. A344195

G.f.: ∏_k>=1 (1 + x^2·k²) / (1 - x^k). A385009

Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 40. A31628