28636286 has 24 divisors (see below), whose sum is σ = 51193296. Its totient is φ = 11971680.

The previous prime is 28636273. The next prime is 28636291. The reversal of 28636286 is 68263682.

It is a Harshad number since it is a multiple of its sum of digits (41).

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, 455 + ... + 7581.

It is an arithmetic number, because the mean of its divisors is an integer number (2133054).

Almost surely, 2^28636286 is an apocalyptic number.

28636286 is a deficient number, since it is larger than the sum of its proper divisors (22557010).

28636286 is a wasteful number, since it uses less digits than its factorization.

28636286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7184 (or 7177 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 28636286 is about 5351.2882561118. The cubic root of 28636286 is about 305.9418560408.

The spelling of 28636286 in words is "twenty-eight million, six hundred thirty-six thousand, two hundred eighty-six".