28115633 has 16 divisors (see below), whose sum is σ = 34728960. Its totient is φ = 22165056.

The previous prime is 28115629. The next prime is 28115699. The reversal of 28115633 is 33651182.

It is a cyclic number.

It is not a de Polignac number, because 28115633 - 2² = 28115629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28115596 and 28115605.

It is not an unprimeable number, because it can be changed into a prime (28115623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46016 + ... + 46622.

It is an arithmetic number, because the mean of its divisors is an integer number (2170560).

Almost surely, 2^28115633 is an apocalyptic number.

It is an amenable number.

28115633 is a deficient number, since it is larger than the sum of its proper divisors (6613327).

28115633 is a wasteful number, since it uses less digits than its factorization.

28115633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136.

The product of its digits is 4320, while the sum is 29.

The square root of 28115633 is about 5302.4176561263. The cubic root of 28115633 is about 304.0763348530.

The spelling of 28115633 in words is "twenty-eight million, one hundred fifteen thousand, six hundred thirty-three".