28669135 has 12 divisors (see below), whose sum is σ = 37815624. Its totient is φ = 20849840.

The previous prime is 28669111. The next prime is 28669169. The reversal of 28669135 is 53196682.

It is not a de Polignac number, because 28669135 - 2¹¹ = 28667087 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23089 + ... + 24298.

It is an arithmetic number, because the mean of its divisors is an integer number (3151302).

Almost surely, 2^28669135 is an apocalyptic number.

28669135 is a deficient number, since it is larger than the sum of its proper divisors (9146489).

28669135 is a wasteful number, since it uses less digits than its factorization.

28669135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47414 (or 47403 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 28669135 is about 5354.3566373562. The cubic root of 28669135 is about 306.0587944326.

The spelling of 28669135 in words is "twenty-eight million, six hundred sixty-nine thousand, one hundred thirty-five".