2557912320 has 108 divisors (see below), whose sum is σ = 8850150036. Its totient is φ = 682106880.

The previous prime is 2557912309. The next prime is 2557912351. The reversal of 2557912320 is 232197552.

2557912320 is a `hidden beast` number, since 255 + 79 + 12 + 320 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 526427136 + 2031485184 = 22944^2 + 45072^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 99501 + ... + 122540.

Almost surely, 2^2557912320 is an apocalyptic number.

2557912320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2557912320 is an abundant number, since it is smaller than the sum of its proper divisors (6292237716).

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

2557912320 is a wasteful number, since it uses less digits than its factorization.

2557912320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222068 (or 222051 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 2557912320 is about 50575.8076554394. The cubic root of 2557912320 is about 1367.6087934416.

The spelling of 2557912320 in words is "two billion, five hundred fifty-seven million, nine hundred twelve thousand, three hundred twenty".