328380720 has 40 divisors (see below), whose sum is σ = 1017980976. Its totient is φ = 87568128.

The previous prime is 328380709. The next prime is 328380763. The reversal of 328380720 is 27083823.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 683887 + ... + 684366.

Almost surely, 2^328380720 is an apocalyptic number.

328380720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328380720 is an abundant number, since it is smaller than the sum of its proper divisors (689600256).

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

328380720 is a wasteful number, since it uses less digits than its factorization.

328380720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1368269 (or 1368263 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 328380720 is about 18121.2781006197. The cubic root of 328380720 is about 689.9101752426.

The spelling of 328380720 in words is "three hundred twenty-eight million, three hundred eighty thousand, seven hundred twenty".