28633318 has 16 divisors (see below), whose sum is σ = 49273344. Its totient is φ = 12224520.

The previous prime is 28633291. The next prime is 28633331. The reversal of 28633318 is 81333682.

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, 21 + ... + 7567.

It is an arithmetic number, because the mean of its divisors is an integer number (3079584).

Almost surely, 2^28633318 is an apocalyptic number.

28633318 is a deficient number, since it is larger than the sum of its proper divisors (20640026).

28633318 is a wasteful number, since it uses less digits than its factorization.

28633318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7827.

The product of its digits is 20736, while the sum is 34.

The square root of 28633318 is about 5351.0109325248. The cubic root of 28633318 is about 305.9312859223.

The spelling of 28633318 in words is "twenty-eight million, six hundred thirty-three thousand, three hundred eighteen".