Properties of the Number 20627

Twenty Thousand Six Hundred Twenty-Seven

Basics

Value: 20626 → 20627 → 20628

Parity: odd

Prime: Yes

Previous Prime: 20611

Next Prime: 20639

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 20627

Divisors: 1, 20627

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101000010010011

Octal: 50223

Duodecimal: BB2B

Hexadecimal: 5093

Square: 425473129

Square Root: 143.62102910089456

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

Numerators of upper primes-only best approximates (POBAs) to sqrt(3); see Comments. A265780

Primes p such that the polynomial x⁵-x⁴-x³-x²-x-1 mod p has 5 distinct zeros. A106281

Prime numbers p not of the form 10k+1 for which the quintonacci quintic polynomial x⁵ - x⁴ - x³ - x² - x - 1 modulus p is factorizable into five binomials. A135847

Prime numbers p for which quintonacci quintic polynomial x⁵-x⁴-x³-x²-x-1 modulus p is completely factorizable. A135846

Expansion of (1/(1 - x)) * ∏_k>=1 (1 + k·x^k/(1 - x)^k). A307259

Discriminants of totally complex sextic fields (negated). A23687

Primes congruent to 36 mod 59. A142763

Primes congruent to 9 mod 61. A142807

Primes p such that both p⁵ - 6 and p⁵ + 6 are prime. A157256

a(0) = 2; for n>0, a(n) = smallest prime p such that p > a(n-1) and p is congruent to n modulo prime(n). A261192