Properties of the Number 20620

Twenty Thousand Six Hundred Twenty

Basics

Value: 20619 → 20620 → 20621

Parity: even

Prime: No

Previous Prime: 20611

Next Prime: 20627

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 5 × 1031

Divisors: 1, 2, 4, 5, 10, 20, 1031, 2062, 4124, 5155

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101000010001100

Octal: 50214

Duodecimal: BB24

Hexadecimal: 508c

Square: 425184400

Square Root: 143.59665734271115

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

Numbers k such that 100k+1, 100k+3, 100k+7, 100k+9 are all primes. A64687

a(n) = dot_product(1,2,...,n)*(3,4,...,n,1,2). A26037

G.f. is the fourth power of the g.f. of A006950. A273228

Number of polynomials of the form xⁿ +- x^n-1 +- x^n-2 +- ... +- 1 irreducible over the integers. A87481

Numerator of Hermite(n, 4/9). A159232

Character of extremal vertex operator algebra of rank 40. A28519

Smallest nonempty set S containing prime divisors of 8k+7 for each k in S. A20620