Properties of the Number 12881

Twelve Thousand Eight Hundred Eighty-One

Basics

Value: 12880 → 12881 → 12882

Parity: odd

Prime: No

Previous Prime: 12853

Next Prime: 12889

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 11 × 1171

Divisors: 1, 11, 1171, 12881

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11001001010001

Octal: 31121

Duodecimal: 7555

Hexadecimal: 3251

Square: 165920161

Square Root: 113.49449325848369

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 n such that p(10n) is prime, where p(n) is the number of partitions of n. A114170

a(n) = 8·n² + 2·n + 1. A188135

a(n) = n + (n-1)*(n-2) + (n-3)*(n-4)*(n-5) + (n-6)*(n-7)*(n-8)*(n-9) + ... + ...*(n-n). A227363

Nonprime numbers with all divisors starting and ending with digit 1. A208261

Gaps of 10 in sequence A038593 (upper terms). A38660

Denominators of continued fraction convergents to sqrt(812). A42567

Positions of 2 in sequence A217916. A217918

Composite numbers k with its divisors having the property that the last digit of every divisor is the same as the first digit of the next divisor. A307858

Composite numbers whose prime factors contain no digits other than 1 and 7. A36307

Denominators of continued fraction convergents to sqrt(203). A41377