328142990 has 32 divisors (see below), whose sum is σ = 683182080. Its totient is φ = 111148704.

The previous prime is 328142953. The next prime is 328143037. The reversal of 328142990 is 99241823.

It is a super-2 number, since 2×328142990² = 215355643772280200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22430 + ... + 34049.

It is an arithmetic number, because the mean of its divisors is an integer number (21349440).

Almost surely, 2^328142990 is an apocalyptic number.

328142990 is an abundant number, since it is smaller than the sum of its proper divisors (355039090).

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

328142990 is a wasteful number, since it uses less digits than its factorization.

328142990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56576.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 328142990 is about 18114.7174971072. The cubic root of 328142990 is about 689.7436490829.

The spelling of 328142990 in words is "three hundred twenty-eight million, one hundred forty-two thousand, nine hundred ninety".