Properties of the Number 12857

Twelve Thousand Eight Hundred Fifty-Seven

Basics

Value: 12856 → 12857 → 12858

Parity: odd

Prime: No

Previous Prime: 12853

Next Prime: 12889

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 13 × 23 × 43

Divisors: 1, 13, 23, 43, 299, 559, 989, 12857

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001000111001

Octal: 31071

Duodecimal: 7535

Hexadecimal: 3239

Square: 165302449

Square Root: 113.38871196022997

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

a(n) is the first of a triple of consecutive integers, each of which is the product of three distinct primes. A66509

a(n) = n*(7·n-2). A135703

a(n) = n-th multiple of n with digit sum n. A82260

Numbers k such that 4*φ(k) = 3*σ(k). A65819

Number of periodic palindromic structures of length n using exactly six different symbols. A56512

Number of primitive (period n) periodic palindromic structures using exactly six different symbols. A56523

Number of unlabeled rooted trees with n nodes in which all positive outdegrees are different. A298478

a(n) = smallest k such that the digit sum of 7k is n. A77494

Number of compositions of n in which the maximal multiplicity of parts equals 9. A243126

Bends in loxodromic sequence of spheres in which each 5 consecutive spheres are in mutual contact. A45626