328225988 has 24 divisors (see below), whose sum is σ = 605690400. Its totient is φ = 155202048.

The previous prime is 328225967. The next prime is 328225993. The reversal of 328225988 is 889522823.

It is a happy number.

It is a super-2 number, since 2×328225988² = 215464598397152288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43556 + ... + 50532.

It is an arithmetic number, because the mean of its divisors is an integer number (25237100).

Almost surely, 2^328225988 is an apocalyptic number.

328225988 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

328225988 is a deficient number, since it is larger than the sum of its proper divisors (277464412).

328225988 is a wasteful number, since it uses less digits than its factorization.

328225988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7619 (or 7617 counting only the distinct ones).

The product of its digits is 552960, while the sum is 47.

The square root of 328225988 is about 18117.0082519162. The cubic root of 328225988 is about 689.8017970238.

The spelling of 328225988 in words is "three hundred twenty-eight million, two hundred twenty-five thousand, nine hundred eighty-eight".