2257345788 has 12 divisors (see below), whose sum is σ = 5267140200. Its totient is φ = 752448592.

The previous prime is 2257345781. The next prime is 2257345789. The reversal of 2257345788 is 8875437522.

2257345788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2257345788² = 10191220013202681888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2257345788.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2257345781) 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, 94056063 + ... + 94056086.

It is an arithmetic number, because the mean of its divisors is an integer number (438928350).

Almost surely, 2^2257345788 is an apocalyptic number.

It is an amenable number.

2257345788 is an abundant number, since it is smaller than the sum of its proper divisors (3009794412).

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

2257345788 is a wasteful number, since it uses less digits than its factorization.

2257345788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188112156 (or 188112154 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 51.

The square root of 2257345788 is about 47511.5332103690. The cubic root of 2257345788 is about 1311.7951784354.

The spelling of 2257345788 in words is "two billion, two hundred fifty-seven million, three hundred forty-five thousand, seven hundred eighty-eight".