Properties of the Number 27998

Twenty-Seven Thousand Nine Hundred Ninety-Eight

Basics

Value: 27997 → 27998 → 27999

Parity: even

Prime: No

Previous Prime: 27997

Next Prime: 28001

Digit Sum: 35

Digital Root: 8

Palindrome: No

Factorization: 2 × 13999

Divisors: 1, 2, 13999, 27998

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110110101011110

Octal: 66536

Duodecimal: 14252

Hexadecimal: 6d5e

Square: 783888004

Square Root: 167.32602905704778

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) = ∑_k=1..n binomial(floor(n/k)+4,5). A365439

a(n) = 36·n² - 8·n - 2 (n >=1). A304834

Numbers whose base-5 representation contains exactly three 3's and three 4's. A45307

Expansion of ∏_m>=1 (1+q^m)^m². A27998

G.f. A(x,y) satisfies: A(x,y) = x·y + 1/A(x,x·y), with A(0,y) = 1. A275760