328717428 has 96 divisors (see below), whose sum is σ = 862374912. Its totient is φ = 96768000.

The previous prime is 328717427. The next prime is 328717429. The reversal of 328717428 is 824717823.

It is an interprime number because it is at equal distance from previous prime (328717427) and next prime (328717429).

It is a self number, because there is not a number n which added to its sum of digits gives 328717428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328717421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488100 + ... + 488772.

It is an arithmetic number, because the mean of its divisors is an integer number (8983072).

Almost surely, 2^328717428 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 328717428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431187456).

328717428 is an abundant number, since it is smaller than the sum of its proper divisors (533657484).

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

328717428 is a wasteful number, since it uses less digits than its factorization.

328717428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825 (or 823 counting only the distinct ones).

The product of its digits is 150528, while the sum is 42.

The square root of 328717428 is about 18130.5661246416. The cubic root of 328717428 is about 690.1458964751.

The spelling of 328717428 in words is "three hundred twenty-eight million, seven hundred seventeen thousand, four hundred twenty-eight".