397208832 has 144 divisors (see below), whose sum is σ = 1126325760. Its totient is φ = 123918336.

The previous prime is 397208807. The next prime is 397208843. The reversal of 397208832 is 238802793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2378413 + ... + 2378579.

Almost surely, 2^397208832 is an apocalyptic number.

397208832 is a gapful number since it is divisible by the number (32) 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 397208832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563162880).

397208832 is an abundant number, since it is smaller than the sum of its proper divisors (729116928).

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

397208832 is a wasteful number, since it uses less digits than its factorization.

397208832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 354 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 397208832 is about 19930.0986450143. The cubic root of 397208832 is about 735.0885061637.

The spelling of 397208832 in words is "three hundred ninety-seven million, two hundred eight thousand, eight hundred thirty-two".