28973112 has 96 divisors (see below), whose sum is σ = 85691520. Its totient is φ = 8137920.

The previous prime is 28973093. The next prime is 28973129. The reversal of 28973112 is 21137982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 83323 + ... + 83669.

It is an arithmetic number, because the mean of its divisors is an integer number (892620).

Almost surely, 2^28973112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28973112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42845760).

28973112 is an abundant number, since it is smaller than the sum of its proper divisors (56718408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28973112 is a wasteful number, since it uses less digits than its factorization.

28973112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 430 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 28973112 is about 5382.6677400709. The cubic root of 28973112 is about 307.1367009609.

The spelling of 28973112 in words is "twenty-eight million, nine hundred seventy-three thousand, one hundred twelve".