ℕ atory
Play Now

Properties of the Number 2440

Two Thousand Four Hundred Forty

Basics

Value: 2439 → 2440 → 2441

Parity: even

Prime: No

Previous Prime: 2437

Next Prime: 2441

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 3 × 5 × 61

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 61, 122

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 100110001000

Octal: 4610

Duodecimal: 14B4

Hexadecimal: 988

Square: 5953600

Square Root: 49.39635614091387

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

Numbers k that divide 3k - 1. A67945
Numbers k such that k2 divides 9k - 1. A127101
a(n) = n2*∏distinct primes p dividing n (1+1/p2). A65958
a(n) is the starting position of the first occurrence of a string of exactly n 6's in the decimal expansion of π. A96760
a(n) = τ(n)*Fibonacci(n), where τ(n) = A000005(n), the number of divisors of n. A203847
Number of partitions p of n into distinct parts not including the number of parts. A240861
Numbers m such that 6·m+1 is a perfect square. A62717
Positive integers n such that n5 + 1 is semiprime. A104238
Number of free poly-[4.6.12]-tiles (holes allowed) with n cells (division into triangles is significant). A197462
Fibonacci sequence beginning 0, 4. A22087