Properties of the Number 22646

Twenty-Two Thousand Six Hundred Forty-Six

Basics

Value: 22645 → 22646 → 22647

Parity: even

Prime: No

Previous Prime: 22643

Next Prime: 22651

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 13 ² × 67

Divisors: 1, 2, 13, 26, 67, 134, 169, 338, 871, 1742

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101100001110110

Octal: 54166

Duodecimal: 11132

Hexadecimal: 5876

Square: 512841316

Square Root: 150.48587973627292

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

G.f. A(x) satisfies A(x) = 1/( 1 - x*(A(x) + A(2·x)) ). A385617

Indices of decagonal numbers that are also hexagonal. A203136

Indices of decagonal numbers (A001107) that are also triangular (A000217). A133217

Numbers k for which 10·2^k + 3 is a prime (giving terms of A068712). A68713

Expansion of ∏_m>=1 (1 + m·q^m)¹⁸. A22646