428259328 has 48 divisors (see below), whose sum is σ = 978672240. Its totient is φ = 183533568.

The previous prime is 428259323. The next prime is 428259371. The reversal of 428259328 is 823952824.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428259323) 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, 601 + ... + 29272.

It is an arithmetic number, because the mean of its divisors is an integer number (20389005).

Almost surely, 2^428259328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428259328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489336120).

428259328 is an abundant number, since it is smaller than the sum of its proper divisors (550412912).

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

428259328 is an equidigital number, since it uses as much as digits as its factorization.

428259328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29902 (or 29882 counting only the distinct ones).

The product of its digits is 276480, while the sum is 43.

The square root of 428259328 is about 20694.4274624837. The cubic root of 428259328 is about 753.7643797969.

The spelling of 428259328 in words is "four hundred twenty-eight million, two hundred fifty-nine thousand, three hundred twenty-eight".