28939112 has 32 divisors (see below), whose sum is σ = 56306880. Its totient is φ = 13933440.

The previous prime is 28939111. The next prime is 28939121. The reversal of 28939112 is 21193982.

It is not an unprimeable number, because it can be changed into a prime (28939111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26693 + ... + 27755.

It is an arithmetic number, because the mean of its divisors is an integer number (1759590).

Almost surely, 2^28939112 is an apocalyptic number.

It is an amenable number.

28939112 is a deficient number, since it is larger than the sum of its proper divisors (27367768).

28939112 is a wasteful number, since it uses less digits than its factorization.

28939112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1193 (or 1189 counting only the distinct ones).

The product of its digits is 7776, while the sum is 35.

The square root of 28939112 is about 5379.5085277375. The cubic root of 28939112 is about 307.0165121076.

The spelling of 28939112 in words is "twenty-eight million, nine hundred thirty-nine thousand, one hundred twelve".