2564844272 has 20 divisors (see below), whose sum is σ = 5129689536. Its totient is φ = 1241053440.

The previous prime is 2564844251. The next prime is 2564844307. The reversal of 2564844272 is 2724484652.

2564844272 is an admirable number.

It is a super-2 number, since 2×2564844272² = 13156852279222419968, 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, 2585033 + ... + 2586024.

Almost surely, 2^2564844272 is an apocalyptic number.

It is an amenable number.

2564844272 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2564844272 is a wasteful number, since it uses less digits than its factorization.

2564844272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5171096 (or 5171090 counting only the distinct ones).

The product of its digits is 860160, while the sum is 44.

The square root of 2564844272 is about 50644.2916032992. The cubic root of 2564844272 is about 1368.8430874550.

The spelling of 2564844272 in words is "two billion, five hundred sixty-four million, eight hundred forty-four thousand, two hundred seventy-two".