2257693856 has 24 divisors (see below), whose sum is σ = 4848911424. Its totient is φ = 1026224320.

The previous prime is 2257693847. The next prime is 2257693897. The reversal of 2257693856 is 6583967522.

It is a junction number, because it is equal to n+sod(n) for n = 2257693798 and 2257693807.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3206600 + ... + 3207303.

It is an arithmetic number, because the mean of its divisors is an integer number (202037976).

Almost surely, 2^2257693856 is an apocalyptic number.

It is an amenable number.

2257693856 is an abundant number, since it is smaller than the sum of its proper divisors (2591217568).

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

2257693856 is a wasteful number, since it uses less digits than its factorization.

2257693856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6413924 (or 6413916 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 53.

The square root of 2257693856 is about 47515.1960534733. The cubic root of 2257693856 is about 1311.8625983910.

The spelling of 2257693856 in words is "two billion, two hundred fifty-seven million, six hundred ninety-three thousand, eight hundred fifty-six".