Properties of the Number 15392

Fifteen Thousand Three Hundred Ninety-Two

Basics

Value: 15391 → 15392 → 15393

Parity: even

Prime: No

Previous Prime: 15391

Next Prime: 15401

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ⁵ × 13 × 37

Divisors: 1, 2, 4, 8, 13, 16, 26, 32, 37, 52

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11110000100000

Octal: 36040

Duodecimal: 8AA8

Hexadecimal: 3c20

Square: 236913664

Square Root: 124.06449935416659

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

E.g.f. A(x) = ∑_n>=0 exp(3ⁿ*x)*xⁿ/n!. A135079

a(n) is the smallest number which has a water-capacity of n. A275339

a(n) = ∑_{k=0..floor(n/3)} C(n-k,2·k) * 2^k * (-2)^n-3·k. A99784

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

Number of partitions p of n such that if h = min(p), then h is an (h,1)-separator of p; see Comments. A239497

Fixed points of f(n) = A252753(n-1). A253789

a(n) = n*(2*(n - 2)*n + (-1)ⁿ + 3)/4. A323724

a(n) = ((8ⁿ) - (-6)ⁿ)/14. A53455

Row sums of correlation triangle for (1+x)³/(1-x). A115293

The least common multiple of 1+n and 1+n². A281660