Properties of the Number 15240

Fifteen Thousand Two Hundred Forty

Basics

Value: 15239 → 15240 → 15241

Parity: even

Prime: No

Previous Prime: 15233

Next Prime: 15241

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 5 × 127

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 11101110001000

Octal: 35610

Duodecimal: 89A0

Hexadecimal: 3b88

Square: 232257600

Square Root: 123.45039489608772

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

Pascal-(1,6,1) array. A81581

Triangle read by rows: T(n,k) is the number of Dyck paths of semilength n having k peaks at even height. A91869

Numbers k such that A380845(k) = 3·k. A380847

Numbers k such that k+1 is a prime, k+2 is twice a prime, and k+3 is three times a prime. A278583

McKay-Thompson series of class 24F for Monster. A58576

McKay-Thompson series of class 24d for Monster. A58587

Triangle read by rows: T(n,k) is the number of ordered trees with n edges and k branches. A91187

Number of Dyck paths of semilength n having exactly three (possibly overlapping) occurrences of the consecutive step pattern UDU, where U = (1,1) and D = (1,-1). A371408

a(n) = ∑_k=1..n floor(k⁴/n). A14819

a(n) = ((5ⁿ mod 4ⁿ) mod 3ⁿ) mod 2ⁿ. A64854