28608685 has 16 divisors (see below), whose sum is σ = 39600000. Its totient is φ = 19434816.

The previous prime is 28608683. The next prime is 28608707. The reversal of 28608685 is 58680682.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28608685 - 2¹ = 28608683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28608683) 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, 66 + ... + 7564.

It is an arithmetic number, because the mean of its divisors is an integer number (2475000).

Almost surely, 2^28608685 is an apocalyptic number.

It is an amenable number.

28608685 is a deficient number, since it is larger than the sum of its proper divisors (10991315).

28608685 is a wasteful number, since it uses less digits than its factorization.

28608685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7620.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 28608685 is about 5348.7087226732. The cubic root of 28608685 is about 305.8435307246.

The spelling of 28608685 in words is "twenty-eight million, six hundred eight thousand, six hundred eighty-five".