328540770 has 48 divisors (see below), whose sum is σ = 859360320. Its totient is φ = 87082272.

The previous prime is 328540703. The next prime is 328540783. The reversal of 328540770 is 77045823.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4101 + ... + 25959.

It is an arithmetic number, because the mean of its divisors is an integer number (17903340).

Almost surely, 2^328540770 is an apocalyptic number.

328540770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 328540770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429680160).

328540770 is an abundant number, since it is smaller than the sum of its proper divisors (530819550).

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

328540770 is a wasteful number, since it uses less digits than its factorization.

328540770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22039 (or 22036 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 328540770 is about 18125.6936418996. The cubic root of 328540770 is about 690.0222425092.

The spelling of 328540770 in words is "three hundred twenty-eight million, five hundred forty thousand, seven hundred seventy".