328091040 has 192 divisors, whose sum is σ = 1157587200. Its totient is φ = 86787072.

The previous prime is 328091017. The next prime is 328091051. The reversal of 328091040 is 40190823.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 328090995 and 328091013.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 747141 + ... + 747579.

It is an arithmetic number, because the mean of its divisors is an integer number (6029100).

Almost surely, 2^328091040 is an apocalyptic number.

328091040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328091040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (578793600).

328091040 is an abundant number, since it is smaller than the sum of its proper divisors (829496160).

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

328091040 is a wasteful number, since it uses less digits than its factorization.

328091040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636 (or 622 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 328091040 is about 18113.2835234256. The cubic root of 328091040 is about 689.7072482102.

The spelling of 328091040 in words is "three hundred twenty-eight million, ninety-one thousand, forty".