28889164 has 6 divisors (see below), whose sum is σ = 50556044. Its totient is φ = 14444580.

The previous prime is 28889153. The next prime is 28889207. The reversal of 28889164 is 46198882.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3611142 + ... + 3611149.

Almost surely, 2^28889164 is an apocalyptic number.

It is an amenable number.

28889164 is a deficient number, since it is larger than the sum of its proper divisors (21666880).

28889164 is a wasteful number, since it uses less digits than its factorization.

28889164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7222295 (or 7222293 counting only the distinct ones).

The product of its digits is 221184, while the sum is 46.

The square root of 28889164 is about 5374.8640913050. The cubic root of 28889164 is about 306.8397767639.

The spelling of 28889164 in words is "twenty-eight million, eight hundred eighty-nine thousand, one hundred sixty-four".