28112942 has 16 divisors (see below), whose sum is σ = 49542192. Its totient is φ = 11795520.

The previous prime is 28112879. The next prime is 28113011. The reversal of 28112942 is 24921182.

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, 48863 + ... + 49434.

It is an arithmetic number, because the mean of its divisors is an integer number (3096387).

Almost surely, 2^28112942 is an apocalyptic number.

28112942 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28112942 is a deficient number, since it is larger than the sum of its proper divisors (21429250).

28112942 is a wasteful number, since it uses less digits than its factorization.

28112942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98323.

The product of its digits is 2304, while the sum is 29.

The square root of 28112942 is about 5302.1638978817. The cubic root of 28112942 is about 304.0666333046.

The spelling of 28112942 in words is "twenty-eight million, one hundred twelve thousand, nine hundred forty-two".