Properties of the Number 12415

Twelve Thousand Four Hundred Fifteen

Basics

Value: 12414 → 12415 → 12416

Parity: odd

Prime: No

Previous Prime: 12413

Next Prime: 12421

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 5 × 13 × 191

Divisors: 1, 5, 13, 65, 191, 955, 2483, 12415

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11000001111111

Octal: 30177

Duodecimal: 7227

Hexadecimal: 307f

Square: 154132225

Square Root: 111.42261888862602

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 the decimal expansions of both k and k² have 1 as smallest digit and 5 as largest digit. A256889

Number of ways to write n as an ordered sum of 5 squarefree numbers. A341065

Numbers k such that 23^k + 2 is prime. A138050

a(n) = number of m such that A080737(m) <= 2n. A80740

Expansion of ∏_k>=1 ((1 - k·x^k) / (1 - x^k)). A267005

Expansion of ∏_k>=1 ((1 - x^7*(2·k-1)) * (1 - x^7·k) / (1 - x^k)). A280937

Expansion of e.g.f. 1/(1 - log(1 + 4·x))^1/4. A352073

Numbers k such that k³ has only odd digits. A30099

Numbers k such that (k, σ(k)) lies on a circle with integral radius centered at the origin, i.e., k² + σ(k)² is a square. A66764

Number of partitions p of n for which Odd(p) = Odd(p') (mod 4), where p' is the conjugate of p. A97566