2257657136 has 20 divisors (see below), whose sum is σ = 4999098192. Its totient is φ = 967567296.

The previous prime is 2257657133. The next prime is 2257657139. The reversal of 2257657136 is 6317567522.

It is an interprime number because it is at equal distance from previous prime (2257657133) and next prime (2257657139).

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (2257657133) 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, 10078715 + ... + 10078938.

Almost surely, 2^2257657136 is an apocalyptic number.

It is an amenable number.

2257657136 is an abundant number, since it is smaller than the sum of its proper divisors (2741441056).

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

2257657136 is a wasteful number, since it uses less digits than its factorization.

2257657136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20157668 (or 20157662 counting only the distinct ones).

The product of its digits is 529200, while the sum is 44.

The square root of 2257657136 is about 47514.8096492031. The cubic root of 2257657136 is about 1311.8554861400.

The spelling of 2257657136 in words is "two billion, two hundred fifty-seven million, six hundred fifty-seven thousand, one hundred thirty-six".