Properties of the Number 2890

Two Thousand Eight Hundred Ninety

Basics

Value: 2889 → 2890 → 2891

Parity: even

Prime: No

Previous Prime: 2887

Next Prime: 2897

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 × 5 × 17 ²

Divisors: 1, 2, 5, 10, 17, 34, 85, 170, 289, 578

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101101001010

Octal: 5512

Duodecimal: 180A

Hexadecimal: b4a

Square: 8352100

Square Root: 53.75872022286245

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 points on surface of tetrahedron; coordination sequence for sodalite net (equals 2·n²+2 for n > 0). A5893

a(n) = 4·n² - 9·n + 6. A54556

Numbers m such that the Bernoulli number B_m has denominator 66. A51230

Coordination sequence for body-centered tetragonal lattice. A8527

a(n) = 10·n². A33583

Generalized 21-gonal (or icosihenagonal) numbers: m*(19·m - 17)/2 with m = 0, +1, -1, +2, -2, +3, -3, ... A303298

Numbers m that are the hypotenuse of exactly 7 distinct integer-sided right triangles, i.e., m² can be written as a sum of two squares in 7 ways. A97101

Numbers k such that k | 13^k + 1. A15963

Numbers n such that 3ⁿ + 2^n-1 is prime. A82103

Numbers m such that there are precisely 10 groups of order m. A249553