28912112 has 20 divisors (see below), whose sum is σ = 56186880. Its totient is φ = 14412288.

The previous prime is 28912099. The next prime is 28912151. The reversal of 28912112 is 21121982.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3089 + ... + 8207.

It is an arithmetic number, because the mean of its divisors is an integer number (2809344).

Almost surely, 2^28912112 is an apocalyptic number.

It is an amenable number.

28912112 is a deficient number, since it is larger than the sum of its proper divisors (27274768).

28912112 is a wasteful number, since it uses less digits than its factorization.

28912112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5480 (or 5474 counting only the distinct ones).

The product of its digits is 576, while the sum is 26.

The square root of 28912112 is about 5376.9984191926. The cubic root of 28912112 is about 306.9210009396.

The spelling of 28912112 in words is "twenty-eight million, nine hundred twelve thousand, one hundred twelve".