328172043 has 6 divisors (see below), whose sum is σ = 437604564. Its totient is φ = 218760444.

The previous prime is 328172041. The next prime is 328172059. The reversal of 328172043 is 340271823.

It is not a de Polignac number, because 328172043 - 2¹ = 328172041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 328172043.

It is not an unprimeable number, because it can be changed into a prime (328172041) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 26148 + ... + 36606.

It is an arithmetic number, because the mean of its divisors is an integer number (72934094).

Almost surely, 2^328172043 is an apocalyptic number.

328172043 is a deficient number, since it is larger than the sum of its proper divisors (109432521).

328172043 is an frugal number, since it uses more digits than its factorization.

328172043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20921 (or 10462 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 328172043 is about 18115.5193963629. The cubic root of 328172043 is about 689.7640045697.

The spelling of 328172043 in words is "three hundred twenty-eight million, one hundred seventy-two thousand, forty-three".