28104322 has 4 divisors (see below), whose sum is σ = 42156486. Its totient is φ = 14052160.

The previous prime is 28104319. The next prime is 28104337. The reversal of 28104322 is 22340182.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28100601 + 3721 = 5301^2 + 61^2 .

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 28104293 and 28104302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7026079 + ... + 7026082.

Almost surely, 2^28104322 is an apocalyptic number.

28104322 is a deficient number, since it is larger than the sum of its proper divisors (14052164).

28104322 is a wasteful number, since it uses less digits than its factorization.

28104322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14052163.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 28104322 is about 5301.3509598969. The cubic root of 28104322 is about 304.0355524556.

The spelling of 28104322 in words is "twenty-eight million, one hundred four thousand, three hundred twenty-two".