Properties of the Number 2889

Two Thousand Eight Hundred Eighty-Nine

Basics

Value: 2888 → 2889 → 2890

Parity: odd

Prime: No

Previous Prime: 2887

Next Prime: 2897

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ³ × 107

Divisors: 1, 3, 9, 27, 107, 321, 963, 2889

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101101001001

Octal: 5511

Duodecimal: 1809

Hexadecimal: b49

Square: 8346321

Square Root: 53.749418601506754

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) = 2·n² + 1. A58331

a(n) = n*(4·n-1). A33991

Numerators of continued fraction convergents to sqrt(5). A1077

Generalized 19-gonal (or enneadecagonal) numbers: m*(17·m - 15)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303813

a(n) = 18·a(n-1) - a(n-2), with a(0) = 1 and a(1) = 9. A23039

Values of n such that L(9) and N(9) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A226929

Numbers such that floor(a(n)² / 5) is a square. A204520

a(n) = 90·n - 81. A139280

Triangle read by rows: numerators of Cotesian numbers C(n,k) (0 <= k <= n). A100640

Sum of proper divisors of A228058(n) that are not squarefree; a(n) = -A325314(A228058(n)). A325320