Properties of the Number 12916

Twelve Thousand Nine Hundred Sixteen

Basics

Value: 12915 → 12916 → 12917

Parity: even

Prime: No

Previous Prime: 12911

Next Prime: 12917

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 3229

Divisors: 1, 2, 4, 3229, 6458, 12916

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11001001110100

Octal: 31164

Duodecimal: 7584

Hexadecimal: 3274

Square: 166823056

Square Root: 113.64858116140297

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

Triangle of central factorial numbers |4^k t(2n+1,2n+1-2k)| read by rows (n>=0, k=0..n). A8956

Exponential Riordan array (1, arcsin(x)). A385343

Numerator of ∑_k=1..n 1/(2·k-1)². A120268

Central factorial numbers: 1st subdiagonal of A008956. A1824

a(n) = ∑_d∣n binomial(n+d-2, n-1). A332508

Numbers that are the sum of seven fourth powers in five or more ways. A345571

Numbers that are the sum of seven fourth powers in exactly five ways. A345827

Number of unlabeled spanning intersecting set-systems on n vertices with no singletons. A305999

Centered 15-gonal numbers: a(n) = (15·n² - 15·n + 2)/2. A69128

Least positive k such that k * [RSA-640]ⁿ - 1 is prime, where RSA-640 is the 193 decimal digit RSA challenge number A391940(14). A108573