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Properties of the Number 2280

Two Thousand Two Hundred Eighty

Basics

Value: 2279 → 2280 → 2281

Parity: even

Prime: No

Previous Prime: 2273

Next Prime: 2281

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 3 × 3 × 5 × 19

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100011101000

Octal: 4350

Duodecimal: 13A0

Hexadecimal: 8e8

Square: 5198400

Square Root: 47.74934554525329

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) = binomial(n+3, 3)/4 for odd n, n*(n+2)*(n+4)/24 for even n. A6918
a(n) = n*σ(n). A64987
a(n) = 2·binomial(n,3). A7290
a(n) = n*(4·n-1). A33991
Numbers k such that σ(k) > 3·k. A68403
Even triangular numbers halved. A74378
Numbers k such that 2k+1 - 1 is prime. A90748
The main column of a version of the square spiral. A156859
Number of partitions of 4n into 4 parts. A238340
Numbers k such that k2 divides 7k-1. A127107