Properties of the Number 27078

Twenty-Seven Thousand Seventy-Eight

Basics

Value: 27077 → 27078 → 27079

Parity: even

Prime: No

Previous Prime: 27077

Next Prime: 27091

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 4513

Divisors: 1, 2, 3, 6, 4513, 9026, 13539, 27078

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 110100111000110

Octal: 64706

Duodecimal: 13806

Hexadecimal: 69c6

Square: 733218084

Square Root: 164.55394252341694

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

Barely abundant numbers: abundant n such that σ(n)/n < σ(m)/m for all abundant numbers m<n, σ(n) being the sum of the divisors of n. A71927

a(1)=1. a(n) = a(n-1) + sum of the triangular numbers which are among the first (n-1) terms of the sequence. A100963

Andrews's shadow difference function D₃(q). A275633

a(n) = ∑_k=0..n T(n,k) * T(n,n+k), with T given by A027052. A27078

Number of nX4 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three no more than once. A269139

Number of nX4 0..3 arrays with some element plus some horizontally, antidiagonally or vertically adjacent neighbor totalling three exactly once. A269148