328723988 has 12 divisors (see below), whose sum is σ = 578280192. Its totient is φ = 163501080.

The previous prime is 328723939. The next prime is 328724003. The reversal of 328723988 is 889327823.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214370 + ... + 215897.

It is an arithmetic number, because the mean of its divisors is an integer number (48190016).

Almost surely, 2^328723988 is an apocalyptic number.

It is an amenable number.

328723988 is a deficient number, since it is larger than the sum of its proper divisors (249556204).

328723988 is a wasteful number, since it uses less digits than its factorization.

328723988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430462 (or 430460 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 50.

The square root of 328723988 is about 18130.7470336994. The cubic root of 328723988 is about 690.1504873755.

The spelling of 328723988 in words is "three hundred twenty-eight million, seven hundred twenty-three thousand, nine hundred eighty-eight".