328628436 has 12 divisors (see below), whose sum is σ = 766799712. Its totient is φ = 109542808.

The previous prime is 328628431. The next prime is 328628437. The reversal of 328628436 is 634826823.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328628431) 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, 13692840 + ... + 13692863.

It is an arithmetic number, because the mean of its divisors is an integer number (63899976).

Almost surely, 2^328628436 is an apocalyptic number.

It is an amenable number.

328628436 is an abundant number, since it is smaller than the sum of its proper divisors (438171276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

328628436 is a wasteful number, since it uses less digits than its factorization.

328628436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27385710 (or 27385708 counting only the distinct ones).

The product of its digits is 331776, while the sum is 42.

The square root of 328628436 is about 18128.1117604675. Note that the first 3 decimals coincide. The cubic root of 328628436 is about 690.0836109560.

The spelling of 328628436 in words is "three hundred twenty-eight million, six hundred twenty-eight thousand, four hundred thirty-six".