Properties of the Number 27999

Twenty-Seven Thousand Nine Hundred Ninety-Nine

Basics

Value: 27998 → 27999 → 28000

Parity: odd

Prime: No

Previous Prime: 27997

Next Prime: 28001

Digit Sum: 36

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 17 × 61

Divisors: 1, 3, 9, 17, 27, 51, 61, 153, 183, 459

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 110110101011111

Octal: 66537

Duodecimal: 14253

Hexadecimal: 6d5f

Square: 783944001

Square Root: 167.3290172086121

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

Number of 12-regular partitions of n (no part is a multiple of 12). A328546

Triangle read by rows: T(n, k) = 10^n-1 - 1 + k·floor(9·10^n-1/n), for 1 <= k <= n. A93846

a(n) = ∑_{k=0..floor(n/2)} 2^k * binomial(2·n-2·k+1,2·k+1). A387627

First column of triangle A093846. A93847

Numbers of the form 110 + p². (where p is a prime). A138693

Number of partitions into non-integral powers. A158

a(n) = 70·n² - 1. A158736

Number of 2 X 2 matrices with all terms in {-n,..,0,..,n} and (sum of terms) = determinant. A281194

Numbers k such that abs(A328258(k)) = abs(A328258(k+1)). A348586

a(n) is the minimum number whose product of digits contains n digits. A329537