5577638728 has 16 divisors (see below), whose sum is σ = 10461582000. Its totient is φ = 2787883536.

The previous prime is 5577638719. The next prime is 5577638771. The reversal of 5577638728 is 8278367755.

It is a super-2 number, since 2×5577638728² = 62220107560170915968, which contains 22 as substring.

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, 91318 + ... + 139621.

It is an arithmetic number, because the mean of its divisors is an integer number (653848875).

Almost surely, 2^5577638728 is an apocalyptic number.

It is an amenable number.

5577638728 is a deficient number, since it is larger than the sum of its proper divisors (4883943272).

5577638728 is a wasteful number, since it uses less digits than its factorization.

5577638728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233964 (or 233960 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 58.

The square root of 5577638728 is about 74683.5907545962. The cubic root of 5577638728 is about 1773.4412000580.

The spelling of 5577638728 in words is "five billion, five hundred seventy-seven million, six hundred thirty-eight thousand, seven hundred twenty-eight".