320872120 has 32 divisors (see below), whose sum is σ = 729414000. Its totient is φ = 127024128.

The previous prime is 320872117. The next prime is 320872121. The reversal of 320872120 is 21278023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320872121) 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, 37470 + ... + 45229.

Almost surely, 2^320872120 is an apocalyptic number.

It is an amenable number.

320872120 is an abundant number, since it is smaller than the sum of its proper divisors (408541880).

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

320872120 is a wasteful number, since it uses less digits than its factorization.

320872120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82807 (or 82803 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 320872120 is about 17912.9037288766. The cubic root of 320872120 is about 684.6111917884.

The spelling of 320872120 in words is "three hundred twenty million, eight hundred seventy-two thousand, one hundred twenty".