Properties of the Number 27081

Twenty-Seven Thousand Eighty-One

Basics

Value: 27080 → 27081 → 27082

Parity: odd

Prime: No

Previous Prime: 27077

Next Prime: 27091

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 17 × 59

Divisors: 1, 3, 9, 17, 27, 51, 59, 153, 177, 459

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110100111001001

Octal: 64711

Duodecimal: 13809

Hexadecimal: 69c9

Square: 733380561

Square Root: 164.56305782282973

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

G.f.: ∏_k>=1 1/(1-x^k)^3·k. A255610

McKay-Thompson series of class 15A for Monster. A58508

McKay-Thompson series of class 15A for the Monster group with a(0) = 1. A134783

McKay-Thompson series of class 15A for the Monster group with a(0) = 4. A153765

a(n) = 324·n² - 564·n + 321 (n>=1). A304617

a(n) = 10000·log(n) rounded to nearest integer. A4244

Number of length 3 1..(n+2) arrays with no leading partial sum equal to a prime. A254541

a(n) is the product of n, the n-th prime and the n-th composite number. A331999

a(n) = ceiling(10000·log(n)). A4245

a(n) = ∑_k=0..2n-3 T(n,k) * T(n,k+3), with T given by A027052. A27081