2564475928 has 16 divisors (see below), whose sum is σ = 5495305680. Its totient is φ = 1099061088.

The previous prime is 2564475877. The next prime is 2564475989. The reversal of 2564475928 is 8295744652.

It is a happy number.

It is a super-2 number, since 2×2564475928² = 13153073570582922368, which contains 22 as substring.

It is a congruent number.

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, 22897051 + ... + 22897162.

It is an arithmetic number, because the mean of its divisors is an integer number (343456605).

Almost surely, 2^2564475928 is an apocalyptic number.

2564475928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2564475928 is an abundant number, since it is smaller than the sum of its proper divisors (2930829752).

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

2564475928 is a wasteful number, since it uses less digits than its factorization.

2564475928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45794226 (or 45794222 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 52.

The square root of 2564475928 is about 50640.6548930797. The cubic root of 2564475928 is about 1368.7775566048. Note that the first 3 decimals are identical.

The spelling of 2564475928 in words is "two billion, five hundred sixty-four million, four hundred seventy-five thousand, nine hundred twenty-eight".