28438112 has 12 divisors (see below), whose sum is σ = 55987596. Its totient is φ = 14219040.

The previous prime is 28438103. The next prime is 28438153. The reversal of 28438112 is 21183482.

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 as a sum of consecutive naturals, namely, 444314 + ... + 444377.

It is an arithmetic number, because the mean of its divisors is an integer number (4665633).

Almost surely, 2^28438112 is an apocalyptic number.

It is an amenable number.

28438112 is a deficient number, since it is larger than the sum of its proper divisors (27549484).

28438112 is an equidigital number, since it uses as much as digits as its factorization.

28438112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888701 (or 888693 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 28438112 is about 5332.7396336217. The cubic root of 28438112 is about 305.2344770434.

The spelling of 28438112 in words is "twenty-eight million, four hundred thirty-eight thousand, one hundred twelve".