328631120 has 40 divisors (see below), whose sum is σ = 770850216. Its totient is φ = 130285568.

The previous prime is 328631101. The next prime is 328631123. The reversal of 328631120 is 21136823.

It can be written as a sum of positive squares in 4 ways, for example, as 4343056 + 324288064 = 2084^2 + 18008^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 328631120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328631123) 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, 9137 + ... + 27216.

Almost surely, 2^328631120 is an apocalyptic number.

It is an amenable number.

328631120 is an abundant number, since it is smaller than the sum of its proper divisors (442219096).

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

328631120 is a wasteful number, since it uses less digits than its factorization.

328631120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36479 (or 36473 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 328631120 is about 18128.1857889862. The cubic root of 328631120 is about 690.0854896526.

Adding to 328631120 its reverse (21136823), we get a palindrome (349767943).

The spelling of 328631120 in words is "three hundred twenty-eight million, six hundred thirty-one thousand, one hundred twenty".