Properties of the Number 27489

Twenty-Seven Thousand Four Hundred Eighty-Nine

Basics

Value: 27488 → 27489 → 27490

Parity: odd

Prime: No

Previous Prime: 27487

Next Prime: 27509

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 ² × 11 × 17

Divisors: 1, 3, 7, 11, 17, 21, 33, 49, 51, 77

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110101101100001

Octal: 65541

Duodecimal: 13AA9

Hexadecimal: 6b61

Square: 755645121

Square Root: 165.79806995257815

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

a(n) = (n+1)*(2·n+1)*(3·n+1). A11199

Expansion of x/(1 -x² -x⁴ -x⁷ -x⁸ -x⁹ -x¹⁰). A143351

Dihedral unlabeled Motzkin numbers: number of ways of drawing any number of nonintersecting chords joining n unlabeled points equally spaced on a circle, up to rotations and reflections of the circle. A185100

a(n) = 49*(n-1)*(n-2)/2. A27469

Numbers with exactly one arithmetic progression of four successive divisors (not necessarily consecutive). A94530

a(n) = binomial(n+1,2)*7². A162942

Number of 4 X n 0..2 arrays with no element equal to the sum of elements to its left or one plus the sum of the elements above it, modulo 3. A239031

Numbers with five neighboring primes on the hexagonal spiral board of odd numbers. A345654

Triangle T(n,k) represents the coefficients of (x¹⁷*d/dx)ⁿ, where n=1,2,3,... A223519

First column of Triangle A027478, constructed from Stirling numbers of the first kind. A27489