Properties of the Number 2678

Two Thousand Six Hundred Seventy-Eight

Basics

Value: 2677 → 2678 → 2679

Parity: even

Prime: No

Previous Prime: 2677

Next Prime: 2683

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 2 × 13 × 103

Divisors: 1, 2, 13, 26, 103, 206, 1339, 2678

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101001110110

Octal: 5166

Duodecimal: 1672

Hexadecimal: a76

Square: 7171684

Square Root: 51.749396131742444

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

Triangle read by rows: T(n,m) (n >= m >= 1) = number of regions (or cells) formed by drawing the line segments connecting any two of the 2*(m+n) perimeter points of an m X n grid of squares. A331452

a(n) = n*(4·n-1). A33991

Number of perfect rulers with length n. A103300

Triangle read by rows: number of connected graphs with k >= 0 edges and n nodes (1<=n<=k+1). A54923

Number of 3·n binary matrices without unit columns up to row and column permutations. A57524

Numbers k such that σ(k) = σ(k+13). A15883

Number of 10's in all partitions of n. A24794

Smallest k > 0 with gcd(k, rev(k)) = n, where rev(k) is digit reversal of k, or 0 if no such k exists. A69554

Non-palindromic balanced numbers in base 9. A256089

Numbers n such that Q(sqrt(n)) has class number 6. A218038