Properties of the Number 20795

Twenty Thousand Seven Hundred Ninety-Five

Basics

Value: 20794 → 20795 → 20796

Parity: odd

Prime: No

Previous Prime: 20789

Next Prime: 20807

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 4159

Divisors: 1, 5, 4159, 20795

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101000100111011

Octal: 50473

Duodecimal: 1004B

Hexadecimal: 513b

Square: 432432025

Square Root: 144.20471559557268

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

L.g.f.: ∑_n>=1 (xⁿ/n) * ∏_d∣n (1 + n·x^d/d). A205477

Expansion of ∏_k>=1 (1 + x^k)^A034448(k). A301982

Numbers m such that m-th centered triangular number is a palindrome. A195903

Numbers n such that 6n and 12n are both the average of twin prime pairs. A177680

a(n) = ceiling(10000·log(n)). A4245

a(n) = the real part of ∏_{k = 0..n} 1 + k·sqrt(-4). A363413

Palindromes in A005448. A162703

Decimal expansion of 1/sqrt(38). A20795