320349392 has 40 divisors (see below), whose sum is σ = 679649952. Its totient is φ = 145065600.

The previous prime is 320349389. The next prime is 320349397. The reversal of 320349392 is 293943023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320349397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45467 + ... + 52037.

Almost surely, 2^320349392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320349392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (339824976).

320349392 is an abundant number, since it is smaller than the sum of its proper divisors (359300560).

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

320349392 is a wasteful number, since it uses less digits than its factorization.

320349392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6867 (or 6861 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 35.

The square root of 320349392 is about 17898.3069590394. The cubic root of 320349392 is about 684.2392264228.

The spelling of 320349392 in words is "three hundred twenty million, three hundred forty-nine thousand, three hundred ninety-two".