28322984 has 8 divisors (see below), whose sum is σ = 53105610. Its totient is φ = 14161488.

The previous prime is 28322981. The next prime is 28323011. The reversal of 28322984 is 48922382.

It can be written as a sum of positive squares in only one way, i.e., 18576100 + 9746884 = 4310^2 + 3122^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (28322981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1770179 + ... + 1770194.

Almost surely, 2^28322984 is an apocalyptic number.

It is an amenable number.

28322984 is a deficient number, since it is larger than the sum of its proper divisors (24782626).

28322984 is a wasteful number, since it uses less digits than its factorization.

28322984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3540379 (or 3540375 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 28322984 is about 5321.9342348436. The cubic root of 28322984 is about 304.8220192459.

The spelling of 28322984 in words is "twenty-eight million, three hundred twenty-two thousand, nine hundred eighty-four".