Properties of the Number 22791

Twenty-Two Thousand Seven Hundred Ninety-One

Basics

Value: 22790 → 22791 → 22792

Parity: odd

Prime: No

Previous Prime: 22787

Next Prime: 22807

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 71 × 107

Divisors: 1, 3, 71, 107, 213, 321, 7597, 22791

Polygonal

Triangular: Yes

Square: No

Pentagonal: No

Hexagonal: Yes

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101100100000111

Octal: 54407

Duodecimal: 11233

Hexadecimal: 5907

Square: 519429681

Square Root: 150.96688378581575

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

Pseudoprimes to base 5. A5936

a(n) is the smallest m for which 3^m contains n consecutive identical digits. A215727

Triangular numbers representable as x·y+x+y such that·and y are triangular numbers, x>=y>1. A259746

Least power of 3 having exactly n consecutive 2's in its decimal representation. A131551

Triangular numbers representable as x·y+x+y such that·and y are triangular numbers, x>=y>0. A259745

Irregular table read by rows: n-th row lists the 9 n-gonal numbers of a 3 X 3 semimagic square with the smallest magic sum. The terms of each row are arranged in the manner shown in A261816. A265141

Power ceiling sequence of sqrt(5). A218983

Pseudoprimes to base 17. A20145

Triangular numbers m such that A040115(m) is also triangular. A87597

Hexagonal numbers with prime indices. A117961