28112930 has 16 divisors (see below), whose sum is σ = 51214464. Its totient is φ = 11109360.

The previous prime is 28112879. The next prime is 28113011. The reversal of 28112930 is 3921182.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28112930.

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, 16106 + ... + 17765.

It is an arithmetic number, because the mean of its divisors is an integer number (3200904).

Almost surely, 2^28112930 is an apocalyptic number.

28112930 is a deficient number, since it is larger than the sum of its proper divisors (23101534).

28112930 is a wasteful number, since it uses less digits than its factorization.

28112930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33961.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 28112930 is about 5302.1627662681. The cubic root of 28112930 is about 304.0665900410.

The spelling of 28112930 in words is "twenty-eight million, one hundred twelve thousand, nine hundred thirty".