428457328 has 20 divisors (see below), whose sum is σ = 893993128. Its totient is φ = 197749440.

The previous prime is 428457319. The next prime is 428457329. The reversal of 428457328 is 823754824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428457329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1029738 + ... + 1030153.

Almost surely, 2^428457328 is an apocalyptic number.

It is an amenable number.

428457328 is an abundant number, since it is smaller than the sum of its proper divisors (465535800).

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

428457328 is a wasteful number, since it uses less digits than its factorization.

428457328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059912 (or 2059906 counting only the distinct ones).

The product of its digits is 430080, while the sum is 43.

The square root of 428457328 is about 20699.2108062119. The cubic root of 428457328 is about 753.8805262086.

The spelling of 428457328 in words is "four hundred twenty-eight million, four hundred fifty-seven thousand, three hundred twenty-eight".