Properties of the Number 27979

Twenty-Seven Thousand Nine Hundred Seventy-Nine

Basics

Value: 27978 → 27979 → 27980

Parity: odd

Prime: No

Previous Prime: 27967

Next Prime: 27983

Digit Sum: 34

Digital Root: 7

Palindrome: No

Factorization: 7 ² × 571

Divisors: 1, 7, 49, 571, 3997, 27979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 110110101001011

Octal: 66513

Duodecimal: 14237

Hexadecimal: 6d4b

Square: 782824441

Square Root: 167.26924403487928

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 rooted trees with n nodes, most of which are leaves. A358581

Number of rooted trees with n nodes, at least half of which are leaves. A358583

a(n) = A001209(n) + 1. A196069

Expansion of ∑_k>=2 x^Fibonacci(k)/(1 - x^Fibonacci(k)) / ∏_k>=2 (1 - x^Fibonacci(k)). A281689

a(n) = A159065(n+1) - A334701(n). A335677

a(n) = ∑_k=0..n T(n,k)*T(n,2n-k), T given by A027960. A27979

Numbers with largest ratio A003313(k)/log₂(k) in the range 2ⁿ < k < 2ⁿ⁺¹. A264803