398270520 has 160 divisors (see below), whose sum is σ = 1355674320. Its totient is φ = 104855040.

The previous prime is 398270497. The next prime is 398270531. The reversal of 398270520 is 25072893.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 268180 + ... + 269660.

Almost surely, 2^398270520 is an apocalyptic number.

398270520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398270520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (677837160).

398270520 is an abundant number, since it is smaller than the sum of its proper divisors (957403800).

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

398270520 is a wasteful number, since it uses less digits than its factorization.

398270520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587 (or 1574 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 398270520 is about 19956.7161627358. The cubic root of 398270520 is about 735.7428557820.

The spelling of 398270520 in words is "three hundred ninety-eight million, two hundred seventy thousand, five hundred twenty".