328765140 has 72 divisors (see below), whose sum is σ = 1087920288. Its totient is φ = 79700160.

The previous prime is 328765133. The next prime is 328765249. The reversal of 328765140 is 41567823.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 328765095 and 328765104.

It is a congruent number.

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, 81042 + ... + 85001.

It is an arithmetic number, because the mean of its divisors is an integer number (15110004).

Almost surely, 2^328765140 is an apocalyptic number.

328765140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

328765140 is an abundant number, since it is smaller than the sum of its proper divisors (759155148).

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

328765140 is a wasteful number, since it uses less digits than its factorization.

328765140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166069 (or 166064 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 328765140 is about 18131.8818659289. The cubic root of 328765140 is about 690.1792854846.

The spelling of 328765140 in words is "three hundred twenty-eight million, seven hundred sixty-five thousand, one hundred forty".