328891924 has 24 divisors (see below), whose sum is σ = 591653160. Its totient is φ = 159903744.

The previous prime is 328891909. The next prime is 328891933. The reversal of 328891924 is 429198823.

It can be written as a sum of positive squares in 4 ways, for example, as 4243600 + 324648324 = 2060^2 + 18018^2 .

It is a congruent number.

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, 17092 + ... + 30820.

It is an arithmetic number, because the mean of its divisors is an integer number (24652215).

Almost surely, 2^328891924 is an apocalyptic number.

It is an amenable number.

328891924 is a deficient number, since it is larger than the sum of its proper divisors (262761236).

328891924 is a wasteful number, since it uses less digits than its factorization.

328891924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13899 (or 13897 counting only the distinct ones).

The product of its digits is 248832, while the sum is 46.

The square root of 328891924 is about 18135.3776911318. The cubic root of 328891924 is about 690.2679936373.

The spelling of 328891924 in words is "three hundred twenty-eight million, eight hundred ninety-one thousand, nine hundred twenty-four".