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Properties of the Number 12970

Twelve Thousand Nine Hundred Seventy

Basics

Value: 12969 → 12970 → 12971

Parity: even

Prime: No

Previous Prime: 12967

Next Prime: 12973

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 1297

Divisors: 1, 2, 5, 10, 1297, 2594, 6485, 12970

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11001010101010

Octal: 31252

Duodecimal: 760A

Hexadecimal: 32aa

Square: 168220900

Square Root: 113.8859078200635

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) = 3·a(n-1) + a(n-2), with a(0)=0, a(1)=1. A6190
Table by antidiagonals of T(n,k) = n·T(n,k-1) + T(n,k-2) starting with T(n,1) = 1. A73133
Array A(n,k) = n·A(n,k-1) + A(n,k-2) read by upward antidiagonals, starting A(n,0) = 0, A(n,1) = 1. A172236
T(n,m) = number of 0..m-1 integer arrays v[1..n] of length n with all autocorrelation values sum(i){v[i]*v[i-k]} distinct for k in 0..n-1. A171307
Triangular array T(n,k), read by rows: coefficients of strong divisibility sequence of polynomials p(1,x) = 1, p(2,x) = 3 + 2·x, p(n,x) = u·p(n-1,x) + v·p(n-2,x) for n >= 3, where u = p(2,x), v = 1 - 2·x - x2. A367300
a(n) = 11·a(n-1) - a(n-2) with a(1)=1, a(2) = 10. A78922
Composite numbers k coprime to 13 such that k divides A006190(k-Kronecker(13,k)). A327653
Triangular array T(n,k), read by rows: coefficients of strong divisibility sequence of polynomials p(1,x) = 1, p(2,x) = 3 + 3·x, p(n,x) = u·p(n-1,x) + v·p(n-2,x) for n >= 3, where u = p(2,x), v = 1 - 2·x - x2. A367301
Numbers m such that 2*φ(m) = φ(m+1). A50472
Fixed-j dispersion for Q = 13: array D(g,h) (g, h >= 1), read by ascending antidiagonals. A120862