28813685 has 8 divisors (see below), whose sum is σ = 35092896. Its totient is φ = 22706640.

The previous prime is 28813627. The next prime is 28813723. The reversal of 28813685 is 58631882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28813685 - 2⁶ = 28813621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42671 + ... + 43340.

It is an arithmetic number, because the mean of its divisors is an integer number (4386612).

Almost surely, 2^28813685 is an apocalyptic number.

It is an amenable number.

28813685 is a deficient number, since it is larger than the sum of its proper divisors (6279211).

28813685 is an equidigital number, since it uses as much as digits as its factorization.

28813685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86083.

The product of its digits is 92160, while the sum is 41.

The square root of 28813685 is about 5367.8380191656. The cubic root of 28813685 is about 306.5723159388.

The spelling of 28813685 in words is "twenty-eight million, eight hundred thirteen thousand, six hundred eighty-five".