428925688 has 32 divisors (see below), whose sum is σ = 825644160. Its totient is φ = 208787040.

The previous prime is 428925677. The next prime is 428925733. The reversal of 428925688 is 886529824.

It is a congruent number.

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, 111981 + ... + 115747.

It is an arithmetic number, because the mean of its divisors is an integer number (25801380).

Almost surely, 2^428925688 is an apocalyptic number.

It is an amenable number.

428925688 is a deficient number, since it is larger than the sum of its proper divisors (396718472).

428925688 is a wasteful number, since it uses less digits than its factorization.

428925688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147 (or 4143 counting only the distinct ones).

The product of its digits is 2211840, while the sum is 52.

The square root of 428925688 is about 20710.5211909310. The cubic root of 428925688 is about 754.1551229080.

The spelling of 428925688 in words is "four hundred twenty-eight million, nine hundred twenty-five thousand, six hundred eighty-eight".