320140492 has 36 divisors (see below), whose sum is σ = 645682800. Its totient is φ = 136054080.

The previous prime is 320140477. The next prime is 320140493. The reversal of 320140492 is 294041023.

It is not an unprimeable number, because it can be changed into a prime (320140493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 917134 + ... + 917482.

Almost surely, 2^320140492 is an apocalyptic number.

It is an amenable number.

320140492 is an abundant number, since it is smaller than the sum of its proper divisors (325542308).

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

320140492 is a wasteful number, since it uses less digits than its factorization.

320140492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722 (or 539 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 320140492 is about 17892.4702598607. The cubic root of 320140492 is about 684.0904631671.

The spelling of 320140492 in words is "three hundred twenty million, one hundred forty thousand, four hundred ninety-two".