328221607 has 4 divisors (see below), whose sum is σ = 375110416. Its totient is φ = 281332800.

The previous prime is 328221589. The next prime is 328221611. The reversal of 328221607 is 706122823.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 328221607 - 2⁷ = 328221479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328221617) 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 3 ways as a sum of consecutive naturals, for example, 23444394 + ... + 23444407.

It is an arithmetic number, because the mean of its divisors is an integer number (93777604).

Almost surely, 2^328221607 is an apocalyptic number.

328221607 is a deficient number, since it is larger than the sum of its proper divisors (46888809).

328221607 is an equidigital number, since it uses as much as digits as its factorization.

328221607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46888808.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 328221607 is about 18116.8873430289. The cubic root of 328221607 is about 689.7987279644.

The spelling of 328221607 in words is "three hundred twenty-eight million, two hundred twenty-one thousand, six hundred seven".