2731247730 has 24 divisors (see below), whose sum is σ = 7101244332. Its totient is φ = 728332704.

The previous prime is 2731247699. The next prime is 2731247747. The reversal of 2731247730 is 377421372.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2588469129 + 142778601 = 50877^2 + 11949^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15173509 + ... + 15173688.

Almost surely, 2^2731247730 is an apocalyptic number.

2731247730 is an abundant number, since it is smaller than the sum of its proper divisors (4369996602).

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

2731247730 is a wasteful number, since it uses less digits than its factorization.

2731247730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30347210 (or 30347207 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The square root of 2731247730 is about 52261.3406831474. The cubic root of 2731247730 is about 1397.8278782609.

The spelling of 2731247730 in words is "two billion, seven hundred thirty-one million, two hundred forty-seven thousand, seven hundred thirty".