398250 has 64 divisors (see below), whose sum is σ = 1123200. Its totient is φ = 104400.

The previous prime is 398249. The next prime is 398261. The reversal of 398250 is 52893.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6721 + ... + 6779.

It is an arithmetic number, because the mean of its divisors is an integer number (17550).

2³⁹⁸²⁵⁰ is an apocalyptic number.

398250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 398250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561600).

398250 is an abundant number, since it is smaller than the sum of its proper divisors (724950).

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

398250 is a wasteful number, since it uses less digits than its factorization.

398250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 398250 is about 631.0705190389. The cubic root of 398250 is about 73.5730219729.

The spelling of 398250 in words is "three hundred ninety-eight thousand, two hundred fifty".