213328028 has 12 divisors (see below), whose sum is σ = 373455432. Its totient is φ = 106626480.

The previous prime is 213328001. The next prime is 213328033. The reversal of 213328028 is 820823312.

213328028 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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, 6326 + ... + 21602.

It is an arithmetic number, because the mean of its divisors is an integer number (31121286).

Almost surely, 2^213328028 is an apocalyptic number.

It is an amenable number.

213328028 is a deficient number, since it is larger than the sum of its proper divisors (160127404).

213328028 is a wasteful number, since it uses less digits than its factorization.

213328028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18772 (or 18770 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 213328028 is about 14605.7532500039. The cubic root of 213328028 is about 597.5156796361.

The spelling of 213328028 in words is "two hundred thirteen million, three hundred twenty-eight thousand, twenty-eight".