628728375 has 32 divisors (see below), whose sum is σ = 1141320960. Its totient is φ = 304836000.

The previous prime is 628728313. The next prime is 628728379. The reversal of 628728375 is 573827826.

It is not a de Polignac number, because 628728375 - 2⁶ = 628728311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628728379) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72085 + ... + 80334.

It is an arithmetic number, because the mean of its divisors is an integer number (35666280).

Almost surely, 2^628728375 is an apocalyptic number.

628728375 is a deficient number, since it is larger than the sum of its proper divisors (512592585).

628728375 is a wasteful number, since it uses less digits than its factorization.

628728375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152448 (or 152438 counting only the distinct ones).

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

The square root of 628728375 is about 25074.4566242222. The cubic root of 628728375 is about 856.6847189610.

The spelling of 628728375 in words is "six hundred twenty-eight million, seven hundred twenty-eight thousand, three hundred seventy-five".