Properties of the Number 13915

Thirteen Thousand Nine Hundred Fifteen

Basics

Value: 13914 → 13915 → 13916

Parity: odd

Prime: No

Previous Prime: 13913

Next Prime: 13921

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 11 ² × 23

Divisors: 1, 5, 11, 23, 55, 115, 121, 253, 605, 1265

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 11011001011011

Octal: 33133

Duodecimal: 8077

Hexadecimal: 365b

Square: 193627225

Square Root: 117.96185824239969

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

Centered tetrahedral numbers. A5894

a(n) is the smallest number k such that the symmetric representation of σ(k) has n parts. A239663

Numbers k such that the average of the divisors of k and k+1 is the same. A238380

Numbers k such that σ(k) = ψ(k) + τ(k)². A390296

G.f.: ∑_k>=1 (k³ * x^k² / ∏_j=1..k (1 - x^j)). A333151

a(n) = ∑_{k=0..floor(3·n/5)} binomial(k+2,2) * binomial(k,3·n-5·k). A392314

Numerators of continued fraction convergents to sqrt(851). A42642

a(n) = ∏_{d∣n, d>1} prime(1+(d mod 12)). A320112

a(n) = ∑_{k=0..floor(2·n/5)} binomial(k+2,2) * binomial(k,2·n-5·k). A392270

One seventh of the sum of the first n primes, when an integer. A112272