428549928 has 16 divisors (see below), whose sum is σ = 1071374880. Its totient is φ = 142849968.

The previous prime is 428549881. The next prime is 428549951. The reversal of 428549928 is 829945824.

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 3 ways as a sum of consecutive naturals, for example, 8928100 + ... + 8928147.

It is an arithmetic number, because the mean of its divisors is an integer number (66960930).

Almost surely, 2^428549928 is an apocalyptic number.

It is an amenable number.

428549928 is an abundant number, since it is smaller than the sum of its proper divisors (642824952).

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

428549928 is a wasteful number, since it uses less digits than its factorization.

428549928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17856256 (or 17856252 counting only the distinct ones).

The product of its digits is 1658880, while the sum is 51.

The square root of 428549928 is about 20701.4474856228. The cubic root of 428549928 is about 753.9348329066.

The spelling of 428549928 in words is "four hundred twenty-eight million, five hundred forty-nine thousand, nine hundred twenty-eight".