28396322 has 4 divisors (see below), whose sum is σ = 42594486. Its totient is φ = 14198160.

The previous prime is 28396309. The next prime is 28396327. The reversal of 28396322 is 22369382.

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., 17380561 + 11015761 = 4169^2 + 3319^2 .

It is a super-2 number, since 2×28396322² = 1612702206255368, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28396327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7099079 + ... + 7099082.

Almost surely, 2^28396322 is an apocalyptic number.

28396322 is a deficient number, since it is larger than the sum of its proper divisors (14198164).

28396322 is a wasteful number, since it uses less digits than its factorization.

28396322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14198163.

The product of its digits is 31104, while the sum is 35.

The square root of 28396322 is about 5328.8199444155. The cubic root of 28396322 is about 305.0848890290.

The spelling of 28396322 in words is "twenty-eight million, three hundred ninety-six thousand, three hundred twenty-two".