28330164 has 18 divisors (see below), whose sum is σ = 71612450. Its totient is φ = 9443376.

The previous prime is 28330153. The next prime is 28330193. The reversal of 28330164 is 46103382.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 28005264 + 324900 = 5292^2 + 570^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 393439 + ... + 393510.

Almost surely, 2^28330164 is an apocalyptic number.

It is an amenable number.

28330164 is an abundant number, since it is smaller than the sum of its proper divisors (43282286).

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

28330164 is a wasteful number, since it uses less digits than its factorization.

28330164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786959 (or 786954 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 28330164 is about 5322.6087588700. The cubic root of 28330164 is about 304.8477749735.

The spelling of 28330164 in words is "twenty-eight million, three hundred thirty thousand, one hundred sixty-four".