Properties of the Number 11912

Eleven Thousand Nine Hundred Twelve

Basics

Value: 11911 → 11912 → 11913

Parity: even

Prime: No

Previous Prime: 11909

Next Prime: 11923

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 1489

Divisors: 1, 2, 4, 8, 1489, 2978, 5956, 11912

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10111010001000

Octal: 27210

Duodecimal: 6A88

Hexadecimal: 2e88

Square: 141895744

Square Root: 109.14210919713803

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 k such that k² divides 15^k-1. A128395

Numbers k such that k³ divides 15^k² - 1. A177915

Number of partitions of n with more even parts than odd parts. A108949

T(n,k)=Number of nXk binary arrays with top left value 1 and no two ones adjacent horizontally, diagonally or antidiagonally. A228660

Convolution of natural numbers >= 3 and Fibonacci numbers. A23552

Cycle of the inventory sequence (as in A063850) starting with n consists of prime numbers. A78970

n(k) is the minimum n that requires at least k to make 2·Prime[n]+Prime[k] a prime. A114234

Table read by downward antidiagonals: T(n,k) is the number of tilings of the n X k cylinder up to horizontal and vertical reflections by two tiles that are fixed under these reflections. A368253

a(n) = floor( n*(n-1)*(n-2)/22 ). A11904

a(n) = 361·n - 1. A158308