28385912 has 16 divisors (see below), whose sum is σ = 53335800. Its totient is φ = 14163040.

The previous prime is 28385911. The next prime is 28385941. The reversal of 28385912 is 21958382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28385911) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 587 + ... + 7557.

Almost surely, 2^28385912 is an apocalyptic number.

It is an amenable number.

28385912 is a deficient number, since it is larger than the sum of its proper divisors (24949888).

28385912 is a wasteful number, since it uses less digits than its factorization.

28385912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7486 (or 7482 counting only the distinct ones).

The product of its digits is 34560, while the sum is 38.

The square root of 28385912 is about 5327.8430907826. The cubic root of 28385912 is about 305.0476034271.

The spelling of 28385912 in words is "twenty-eight million, three hundred eighty-five thousand, nine hundred twelve".