328628149 has 4 divisors (see below), whose sum is σ = 328958764. Its totient is φ = 328297536.

The previous prime is 328628129. The next prime is 328628189. The reversal of 328628149 is 941826823.

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

It can be written as a sum of positive squares in 2 ways, for example, as 164608900 + 164019249 = 12830^2 + 12807^2 .

It is a cyclic number.

It is not a de Polignac number, because 328628149 - 2⁷ = 328628021 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 (328628129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163812 + ... + 165805.

It is an arithmetic number, because the mean of its divisors is an integer number (82239691).

Almost surely, 2^328628149 is an apocalyptic number.

It is an amenable number.

328628149 is a deficient number, since it is larger than the sum of its proper divisors (330615).

328628149 is an equidigital number, since it uses as much as digits as its factorization.

328628149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330614.

The product of its digits is 165888, while the sum is 43.

The square root of 328628149 is about 18128.1038445834. The cubic root of 328628149 is about 690.0834100665.

The spelling of 328628149 in words is "three hundred twenty-eight million, six hundred twenty-eight thousand, one hundred forty-nine".