Properties of the Number 30820

Thirty Thousand Eight Hundred Twenty

Basics

Value: 30819 → 30820 → 30821

Parity: even

Prime: No

Previous Prime: 30817

Next Prime: 30829

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 5 × 23 × 67

Divisors: 1, 2, 4, 5, 10, 20, 23, 46, 67, 92

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100001100100

Octal: 74144

Duodecimal: 15A04

Hexadecimal: 7864

Square: 949872400

Square Root: 175.5562587890275

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

Number of (w,x,y,z) with all terms in {1,...,n} and |x-y| = w + |y-z|. A212683

Number of strictly-convex unit-sided polygons with all internal angles equal to a multiple of π/n, ignoring rotational and reflectional copies. A361635

G.f. = φ³*F³, where φ = g.f. for A028930, F = g.f. for A028959. A328534

Smallest of 6 consecutive integers divisible respectively by 6 consecutive primes. A72722

[ exp(9/23)*n! ]. A30820