28029633 has 16 divisors (see below), whose sum is σ = 38335680. Its totient is φ = 18209984.

The previous prime is 28029623. The next prime is 28029641. The reversal of 28029633 is 33692082.

It is a cyclic number.

It is not a de Polignac number, because 28029633 - 2⁵ = 28029601 is a prime.

It is a super-2 number, since 2×28029633² = 1571320652229378, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 28029594 and 28029603.

It is not an unprimeable number, because it can be changed into a prime (28029623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26998 + ... + 28016.

It is an arithmetic number, because the mean of its divisors is an integer number (2395980).

Almost surely, 2^28029633 is an apocalyptic number.

28029633 is the 3057-th octagonal number.

It is an amenable number.

28029633 is a deficient number, since it is larger than the sum of its proper divisors (10306047).

28029633 is a wasteful number, since it uses less digits than its factorization.

28029633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248.

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 28029633 is about 5294.3019369885. The cubic root of 28029633 is about 303.7659823256.

The spelling of 28029633 in words is "twenty-eight million, twenty-nine thousand, six hundred thirty-three".