Properties of the Number 12860

Twelve Thousand Eight Hundred Sixty

Basics

Value: 12859 → 12860 → 12861

Parity: even

Prime: No

Previous Prime: 12853

Next Prime: 12889

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ² × 5 × 643

Divisors: 1, 2, 4, 5, 10, 20, 643, 1286, 2572, 3215

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11001000111100

Octal: 31074

Duodecimal: 7538

Hexadecimal: 323c

Square: 165379600

Square Root: 113.40194001867869

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 Bernoulli number B_n has denominator 330. A272183

T(n,k)=Number of nXk 0..1 arrays with each 1 adjacent to 0, 2 or 4 king-move neighboring 1s. A296725

Row 2 in rectangular array A292929. A294065

a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero n-gonal pyramidal numbers in exactly n ways, or 0 if no such integer exists. A350210

Triangle read by rows: T(n,k) is the number of Schroeder paths of length 2n and having k platforms (i.e., UHD, UHHD, UHHHD, ..., where U=(1,1), D=(1,-1), H=(2,0)). A104546

Expansion of g²/(1 - x·g)³, where g = 1+x·g³ is the g.f. of A001764. A391172

Expansion of ∏_m>=1 (1+m·q^m)^-10. A22702

Number of set partitions of [n] such that no part contains two elements with a circular distance less than three. A261478

Half-sum (or average) of cubes of two distinct odd primes. A138855

Number of admissible 2-dimensional lattice patterns of type σ(2,3,5). A220843