398783232 has 108 divisors (see below), whose sum is σ = 1166032504. Its totient is φ = 131051520.

The previous prime is 398783219. The next prime is 398783233. The reversal of 398783232 is 232387893.

It is a happy number.

It is a super-2 number, since 2×398783232² = 318056132248731648, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (398783233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167007 + ... + 169377.

Almost surely, 2^398783232 is an apocalyptic number.

398783232 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 398783232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (583016252).

398783232 is an abundant number, since it is smaller than the sum of its proper divisors (767249272).

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

398783232 is a wasteful number, since it uses less digits than its factorization.

398783232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466 (or 2449 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 398783232 is about 19969.5576315551. The cubic root of 398783232 is about 736.0584389641.

The spelling of 398783232 in words is "three hundred ninety-eight million, seven hundred eighty-three thousand, two hundred thirty-two".