2757730388 has 18 divisors (see below), whose sum is σ = 5613951546. Its totient is φ = 1181884368.

The previous prime is 2757730363. The next prime is 2757730477. The reversal of 2757730388 is 8830377572.

It can be written as a sum of positive squares in only one way, i.e., 1737055684 + 1020674704 = 41678^2 + 31948^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7034831 + ... + 7035222.

It is an arithmetic number, because the mean of its divisors is an integer number (311886197).

Almost surely, 2^2757730388 is an apocalyptic number.

2757730388 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2757730388 is an abundant number, since it is smaller than the sum of its proper divisors (2856221158).

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

2757730388 is a wasteful number, since it uses less digits than its factorization.

2757730388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14070071 (or 14070062 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 50.

The square root of 2757730388 is about 52514.0970406995. The cubic root of 2757730388 is about 1402.3312160110.

The spelling of 2757730388 in words is "two billion, seven hundred fifty-seven million, seven hundred thirty thousand, three hundred eighty-eight".