28685937 has 16 divisors (see below), whose sum is σ = 44779392. Its totient is φ = 15991680.

The previous prime is 28685929. The next prime is 28685939. The reversal of 28685937 is 73958682.

It is not a de Polignac number, because 28685937 - 2³ = 28685929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28685939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15798 + ... + 17519.

It is an arithmetic number, because the mean of its divisors is an integer number (2798712).

Almost surely, 2^28685937 is an apocalyptic number.

It is an amenable number.

28685937 is a deficient number, since it is larger than the sum of its proper divisors (16093455).

28685937 is a wasteful number, since it uses less digits than its factorization.

28685937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33368.

The product of its digits is 725760, while the sum is 48.

The square root of 28685937 is about 5355.9254102349. The cubic root of 28685937 is about 306.1185729551.

The spelling of 28685937 in words is "twenty-eight million, six hundred eighty-five thousand, nine hundred thirty-seven".