428000128 has 16 divisors (see below), whose sum is σ = 852656760. Its totient is φ = 214000000.

The previous prime is 428000119. The next prime is 428000147. The reversal of 428000128 is 821000824.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1671748 + ... + 1672003.

Almost surely, 2^428000128 is an apocalyptic number.

It is an amenable number.

428000128 is a deficient number, since it is larger than the sum of its proper divisors (424656632).

428000128 is an equidigital number, since it uses as much as digits as its factorization.

428000128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3343765 (or 3343753 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 428000128 is about 20688.1639591337. The cubic root of 428000128 is about 753.6122794657.

The spelling of 428000128 in words is "four hundred twenty-eight million, one hundred twenty-eight", and thus it is an aban number.