Properties of the Number 915

Nine Hundred Fifteen

Basics

Value: 914 → 915 → 916

Parity: odd

Prime: No

Previous Prime: 911

Next Prime: 919

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 5 × 61

Divisors: 1, 3, 5, 15, 61, 183, 305, 915

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110010011

Octal: 1623

Duodecimal: 643

Hexadecimal: 393

Square: 837225

Square Root: 30.24896692450835

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) = ∑_k=0..n p(k) where p(k) = number of partitions of k (A000041). A70

Number of palindromic partitions of n. A25065

Smith (or joke) numbers: composite numbers k such that sum of digits of k = sum of digits of prime factors of k (counted with multiplicity). A6753

a(n) = n*(4·n+1). A7742

Expansion of g.f. x*(1 + 3·x)/((1 + x)*(1 - x)³). A35608

Even triangular numbers halved. A74378

Multiples of 15 containing a 15 in their decimal representation. A121035

Numbers k such that φ(k) = φ(σ(k)). A6872

Products of exactly three distinct odd primes. A46389

Integers k whose Zeckendorf representation A014417(k) is palindromic. A94202