390071232 has 84 divisors (see below), whose sum is σ = 1144143000. Its totient is φ = 126991872.

The previous prime is 390071221. The next prime is 390071267. The reversal of 390071232 is 232170093.

It is a junction number, because it is equal to n+sod(n) for n = 390071196 and 390071205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16894 + ... + 32642.

It is an arithmetic number, because the mean of its divisors is an integer number (13620750).

Almost surely, 2^390071232 is an apocalyptic number.

390071232 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 390071232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (572071500).

390071232 is an abundant number, since it is smaller than the sum of its proper divisors (754071768).

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

390071232 is a wasteful number, since it uses less digits than its factorization.

390071232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15810 (or 15797 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 390071232 is about 19750.2210620540. The cubic root of 390071232 is about 730.6588359992.

The spelling of 390071232 in words is "three hundred ninety million, seventy-one thousand, two hundred thirty-two".