398277632 has 88 divisors (see below), whose sum is σ = 854237664. Its totient is φ = 184942592.

The previous prime is 398277613. The next prime is 398277661. The reversal of 398277632 is 236772893.

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, 2384813 + ... + 2384979.

Almost surely, 2^398277632 is an apocalyptic number.

398277632 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 398277632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427118832).

398277632 is an abundant number, since it is smaller than the sum of its proper divisors (455960032).

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

398277632 is a wasteful number, since it uses less digits than its factorization.

398277632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341 (or 323 counting only the distinct ones).

The product of its digits is 762048, while the sum is 47.

The square root of 398277632 is about 19956.8943475682. The cubic root of 398277632 is about 735.7472351940.

The spelling of 398277632 in words is "three hundred ninety-eight million, two hundred seventy-seven thousand, six hundred thirty-two".