28788932 has 24 divisors (see below), whose sum is σ = 51576000. Its totient is φ = 14056416.

The previous prime is 28788913. The next prime is 28788979. The reversal of 28788932 is 23988782.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46658 + ... + 47270.

It is an arithmetic number, because the mean of its divisors is an integer number (2149000).

Almost surely, 2^28788932 is an apocalyptic number.

It is an amenable number.

28788932 is a deficient number, since it is larger than the sum of its proper divisors (22787068).

28788932 is a wasteful number, since it uses less digits than its factorization.

28788932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875 (or 873 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 28788932 is about 5365.5318468909. The cubic root of 28788932 is about 306.4845016633.

The spelling of 28788932 in words is "twenty-eight million, seven hundred eighty-eight thousand, nine hundred thirty-two".