2560

Properties by base:

More about this number at Positiv Integers and Number Empire.

The number is not a prime.

Its 10 (2 unique) factors are:
2⁹ = 512
5

Its 20 divisors are:
1
2
4
5
8
10
16
20
32
40
64
80
128
160
256
320
512
640
1280
2560
Its aliquote sum is:
3578
makeing it a abundant number.

The number appears at position 4761 of the decimal digits of π surrounded by
71664162748888007869256029022847210403172118 Source: The Pi-Search Page

Computations done with Math::BigInt 1.999811 and Math::Pari 2.030523 based on PARI/GP 2.11.3 (elapsed: 6305.335ms; cpu: 4218.597ms)