2731502720 has 32 divisors (see below), whose sum is σ = 6530000220. Its totient is φ = 1092600832.

The previous prime is 2731502707. The next prime is 2731502723. The reversal of 2731502720 is 272051372.

It can be written as a sum of positive squares in 2 ways, for example, as 2550654016 + 180848704 = 50504^2 + 13448^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×2731502720² = 14922214218734796800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2731502723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2133347 + ... + 2134626.

Almost surely, 2^2731502720 is an apocalyptic number.

2731502720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2731502720 is an abundant number, since it is smaller than the sum of its proper divisors (3798497500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2731502720 is an equidigital number, since it uses as much as digits as its factorization.

2731502720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4267992 (or 4267980 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 2731502720 is about 52263.7801924048. The cubic root of 2731502720 is about 1397.8713774323.

The spelling of 2731502720 in words is "two billion, seven hundred thirty-one million, five hundred two thousand, seven hundred twenty".