320554432 has 28 divisors (see below), whose sum is σ = 693929016. Its totient is φ = 145706240.

The previous prime is 320554417. The next prime is 320554447. The reversal of 320554432 is 234455023.

It is an interprime number because it is at equal distance from previous prime (320554417) and next prime (320554447).

It is a self number, because there is not a number n which added to its sum of digits gives 320554432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226963 + ... + 228370.

Almost surely, 2^320554432 is an apocalyptic number.

320554432 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320554432 is an abundant number, since it is smaller than the sum of its proper divisors (373374584).

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

320554432 is a wasteful number, since it uses less digits than its factorization.

320554432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455356 (or 455346 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 28.

The square root of 320554432 is about 17904.0339588597. The cubic root of 320554432 is about 684.3851779920.

The spelling of 320554432 in words is "three hundred twenty million, five hundred fifty-four thousand, four hundred thirty-two".