6388078628 has 24 divisors (see below), whose sum is σ = 11238561600. Its totient is φ = 3177102240.

The previous prime is 6388078531. The next prime is 6388078663. The reversal of 6388078628 is 8268708836.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 673358 + ... + 682778.

It is an arithmetic number, because the mean of its divisors is an integer number (468273400).

Almost surely, 2^6388078628 is an apocalyptic number.

It is an amenable number.

6388078628 is a deficient number, since it is larger than the sum of its proper divisors (4850482972).

6388078628 is a wasteful number, since it uses less digits than its factorization.

6388078628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10307 (or 10305 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 56.

The square root of 6388078628 is about 79925.4566955986. The cubic root of 6388078628 is about 1855.4820230291.

The spelling of 6388078628 in words is "six billion, three hundred eighty-eight million, seventy-eight thousand, six hundred twenty-eight".