398528 has 28 divisors (see below), whose sum is σ = 853440. Its totient is φ = 183552.

The previous prime is 398509. The next prime is 398539. The reversal of 398528 is 825893.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 593 + ... + 1071.

It is an arithmetic number, because the mean of its divisors is an integer number (30480).

2³⁹⁸⁵²⁸ 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 398528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (426720).

398528 is an abundant number, since it is smaller than the sum of its proper divisors (454912).

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

398528 is a wasteful number, since it uses less digits than its factorization.

398528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 504 (or 494 counting only the distinct ones).

The product of its digits is 17280, while the sum is 35.

The square root of 398528 is about 631.2907412595. The cubic root of 398528 is about 73.5901373048.

The spelling of 398528 in words is "three hundred ninety-eight thousand, five hundred twenty-eight".