728375628 has 24 divisors (see below), whose sum is σ = 1754368000. Its totient is φ = 234959760.

The previous prime is 728375617. The next prime is 728375633. The reversal of 728375628 is 826573827.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 978628 + ... + 979371.

Almost surely, 2^728375628 is an apocalyptic number.

It is an amenable number.

728375628 is an abundant number, since it is smaller than the sum of its proper divisors (1025992372).

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

728375628 is a wasteful number, since it uses less digits than its factorization.

728375628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958037 (or 1958035 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The square root of 728375628 is about 26988.4350787518. The cubic root of 728375628 is about 899.7429833999.

The spelling of 728375628 in words is "seven hundred twenty-eight million, three hundred seventy-five thousand, six hundred twenty-eight".