28088635 has 16 divisors (see below), whose sum is σ = 36311040. Its totient is φ = 20797920.

The previous prime is 28088623. The next prime is 28088639. The reversal of 28088635 is 53688082.

It is not a de Polignac number, because 28088635 - 2⁷ = 28088507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28088639) 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, 375 + ... + 7504.

It is an arithmetic number, because the mean of its divisors is an integer number (2269440).

Almost surely, 2^28088635 is an apocalyptic number.

28088635 is a deficient number, since it is larger than the sum of its proper divisors (8222405).

28088635 is a wasteful number, since it uses less digits than its factorization.

28088635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7938.

The product of its (nonzero) digits is 92160, while the sum is 40.

The square root of 28088635 is about 5299.8712248507. The cubic root of 28088635 is about 303.9789740479.

The spelling of 28088635 in words is "twenty-eight million, eighty-eight thousand, six hundred thirty-five".