320577432 has 64 divisors (see below), whose sum is σ = 969822720. Its totient is φ = 86204928.

The previous prime is 320577419. The next prime is 320577533. The reversal of 320577432 is 234775023.

It is a junction number, because it is equal to n+sod(n) for n = 320577393 and 320577402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53268 + ... + 58979.

It is an arithmetic number, because the mean of its divisors is an integer number (15153480).

Almost surely, 2^320577432 is an apocalyptic number.

It is an amenable number.

320577432 is an abundant number, since it is smaller than the sum of its proper divisors (649245288).

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

320577432 is a wasteful number, since it uses less digits than its factorization.

320577432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112280 (or 112276 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 33.

The square root of 320577432 is about 17904.6762606868. The cubic root of 320577432 is about 684.4015459689.

The spelling of 320577432 in words is "three hundred twenty million, five hundred seventy-seven thousand, four hundred thirty-two".