28322764 has 24 divisors (see below), whose sum is σ = 51287040. Its totient is φ = 13677456.

The previous prime is 28322761. The next prime is 28322771. The reversal of 28322764 is 46722382.

It is not an unprimeable number, because it can be changed into a prime (28322761) 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, 13899 + ... + 15805.

It is an arithmetic number, because the mean of its divisors is an integer number (2136960).

Almost surely, 2^28322764 is an apocalyptic number.

It is an amenable number.

28322764 is a deficient number, since it is larger than the sum of its proper divisors (22964276).

28322764 is a wasteful number, since it uses less digits than its factorization.

28322764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2035 counting only the distinct ones).

The product of its digits is 32256, while the sum is 34.

The square root of 28322764 is about 5321.9135656266. The cubic root of 28322764 is about 304.8212300045.

The spelling of 28322764 in words is "twenty-eight million, three hundred twenty-two thousand, seven hundred sixty-four".