28189552 has 10 divisors (see below), whose sum is σ = 54617288. Its totient is φ = 14094768.

The previous prime is 28189543. The next prime is 28189583. The reversal of 28189552 is 25598182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 880908 + ... + 880939.

Almost surely, 2^28189552 is an apocalyptic number.

It is an amenable number.

28189552 is a deficient number, since it is larger than the sum of its proper divisors (26427736).

28189552 is a wasteful number, since it uses less digits than its factorization.

28189552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1761855 (or 1761849 counting only the distinct ones).

The product of its digits is 57600, while the sum is 40.

The square root of 28189552 is about 5309.3833916944. The cubic root of 28189552 is about 304.3425847024.

The spelling of 28189552 in words is "twenty-eight million, one hundred eighty-nine thousand, five hundred fifty-two".