398257024 has 64 divisors (see below), whose sum is σ = 911145600. Its totient is φ = 171486720.

The previous prime is 398257007. The next prime is 398257037. The reversal of 398257024 is 420752893.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19309 + ... + 34195.

It is an arithmetic number, because the mean of its divisors is an integer number (14236650).

Almost surely, 2^398257024 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 398257024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455572800).

398257024 is an abundant number, since it is smaller than the sum of its proper divisors (512888576).

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

398257024 is a wasteful number, since it uses less digits than its factorization.

398257024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14931 (or 14919 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 398257024 is about 19956.3780280892. The cubic root of 398257024 is about 735.7345451010.

The spelling of 398257024 in words is "three hundred ninety-eight million, two hundred fifty-seven thousand, twenty-four".