328644188 has 12 divisors (see below), whose sum is σ = 575943480. Its totient is φ = 164088912.

The previous prime is 328644181. The next prime is 328644191. The reversal of 328644188 is 881446823.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328644181) 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, 55106 + ... + 60777.

It is an arithmetic number, because the mean of its divisors is an integer number (47995290).

Almost surely, 2^328644188 is an apocalyptic number.

It is an amenable number.

328644188 is a deficient number, since it is larger than the sum of its proper divisors (247299292).

328644188 is a wasteful number, since it uses less digits than its factorization.

328644188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116596 (or 116594 counting only the distinct ones).

The product of its digits is 294912, while the sum is 44.

The square root of 328644188 is about 18128.5462186023. The cubic root of 328644188 is about 690.0946366030.

It can be divided in two parts, 3286 and 44188, that added together give a palindrome (47474).

The spelling of 328644188 in words is "three hundred twenty-eight million, six hundred forty-four thousand, one hundred eighty-eight".