398216232 has 24 divisors (see below), whose sum is σ = 1078502490. Its totient is φ = 132738720.

The previous prime is 398216201. The next prime is 398216251. The reversal of 398216232 is 232612893.

398216232 is a `hidden beast` number, since 3 + 9 + 8 + 21 + 623 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 214505316 + 183710916 = 14646^2 + 13554^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2765319 + ... + 2765462.

Almost surely, 2^398216232 is an apocalyptic number.

It is an amenable number.

398216232 is an abundant number, since it is smaller than the sum of its proper divisors (680286258).

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

398216232 is a wasteful number, since it uses less digits than its factorization.

398216232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530793 (or 5530786 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 398216232 is about 19955.3559727708. The cubic root of 398216232 is about 735.7094247169.

The spelling of 398216232 in words is "three hundred ninety-eight million, two hundred sixteen thousand, two hundred thirty-two".