28822664 has 32 divisors (see below), whose sum is σ = 58544640. Its totient is φ = 13224000.

The previous prime is 28822649. The next prime is 28822669. The reversal of 28822664 is 46622882.

It is not an unprimeable number, because it can be changed into a prime (28822669) 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 7 ways as a sum of consecutive naturals, for example, 19139 + ... + 20589.

It is an arithmetic number, because the mean of its divisors is an integer number (1829520).

Almost surely, 2^28822664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28822664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29272320).

28822664 is an abundant number, since it is smaller than the sum of its proper divisors (29721976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28822664 is a wasteful number, since it uses less digits than its factorization.

28822664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661 (or 1657 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 28822664 is about 5368.6743242629. The cubic root of 28822664 is about 306.6041576018.

The spelling of 28822664 in words is "twenty-eight million, eight hundred twenty-two thousand, six hundred sixty-four".