Properties of the Number 2808

Two Thousand Eight Hundred Eight

Basics

Value: 2807 → 2808 → 2809

Parity: even

Prime: No

Previous Prime: 2803

Next Prime: 2819

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ³ × 13

Divisors: 1, 2, 3, 4, 6, 8, 9, 12, 13, 18

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101011111000

Octal: 5370

Duodecimal: 1760

Hexadecimal: af8

Square: 7884864

Square Root: 52.99056519796708

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

8 times triangular numbers: a(n) = 4·n*(n+1). A33996

Partial sums of A243980. A244050

a(n) = (prime(n)-1)*(prime(n)+1). A84920

Terms in an n X n spiral that do not lie on its principal diagonals. A137932

a(n) = n² - 2·n. A67998

Bisection of A001400. A14125

Numbers that can be expressed as the difference of the squares of primes in just two distinct ways. A90788

Years in which there are five Fridays in the month of February. A141287

Number of fully normal integer partitions of n. A317491

3 times octagonal numbers: a(n) = 3·n*(3·n-2). A152751