328710644 has 12 divisors (see below), whose sum is σ = 575384964. Its totient is φ = 164314944.

The previous prime is 328710631. The next prime is 328710647. The reversal of 328710644 is 446017823.

It can be written as a sum of positive squares in 2 ways, for example, as 168688144 + 160022500 = 12988^2 + 12650^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328710647) 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, 15344 + ... + 29880.

It is an arithmetic number, because the mean of its divisors is an integer number (47948747).

Almost surely, 2^328710644 is an apocalyptic number.

It is an amenable number.

328710644 is a deficient number, since it is larger than the sum of its proper divisors (246674320).

328710644 is a wasteful number, since it uses less digits than its factorization.

328710644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20194 (or 20192 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 328710644 is about 18130.3790363026. The cubic root of 328710644 is about 690.1411487479.

It can be divided in two parts, 3287 and 10644, that added together give a palindrome (13931).

The spelling of 328710644 in words is "three hundred twenty-eight million, seven hundred ten thousand, six hundred forty-four".