28028112 has 40 divisors (see below), whose sum is σ = 82750656. Its totient is φ = 8007936.

The previous prime is 28028107. The next prime is 28028141. The reversal of 28028112 is 21182082.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 7 ways as a sum of consecutive naturals, for example, 41373 + ... + 42044.

Almost surely, 2^28028112 is an apocalyptic number.

It is an amenable number.

28028112 is an abundant number, since it is smaller than the sum of its proper divisors (54722544).

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

28028112 is a wasteful number, since it uses less digits than its factorization.

28028112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83435 (or 83429 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 24.

The square root of 28028112 is about 5294.1582900401. The cubic root of 28028112 is about 303.7604877071.

The spelling of 28028112 in words is "twenty-eight million, twenty-eight thousand, one hundred twelve".