28885633 has 8 divisors (see below), whose sum is σ = 33572160. Its totient is φ = 24339120.

The previous prime is 28885627. The next prime is 28885651. The reversal of 28885633 is 33658882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28885633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28885633.

It is not an unprimeable number, because it can be changed into a prime (28885603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34558 + ... + 35383.

It is an arithmetic number, because the mean of its divisors is an integer number (4196520).

Almost surely, 2^28885633 is an apocalyptic number.

It is an amenable number.

28885633 is a deficient number, since it is larger than the sum of its proper divisors (4686527).

28885633 is an equidigital number, since it uses as much as digits as its factorization.

28885633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70007.

The product of its digits is 276480, while the sum is 43.

The square root of 28885633 is about 5374.5356078456. The cubic root of 28885633 is about 306.8272750130.

The spelling of 28885633 in words is "twenty-eight million, eight hundred eighty-five thousand, six hundred thirty-three".