28321322 has 4 divisors (see below), whose sum is σ = 42481986. Its totient is φ = 14160660.

The previous prime is 28321301. The next prime is 28321331. The reversal of 28321322 is 22312382.

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., 28313041 + 8281 = 5321^2 + 91^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7080329 + ... + 7080332.

Almost surely, 2^28321322 is an apocalyptic number.

28321322 is a deficient number, since it is larger than the sum of its proper divisors (14160664).

28321322 is a wasteful number, since it uses less digits than its factorization.

28321322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14160663.

The product of its digits is 1152, while the sum is 23.

The square root of 28321322 is about 5321.7780863166. The cubic root of 28321322 is about 304.8160567844.

The spelling of 28321322 in words is "twenty-eight million, three hundred twenty-one thousand, three hundred twenty-two".