28422304 has 24 divisors (see below), whose sum is σ = 56669760. Its totient is φ = 14030016.

The previous prime is 28422301. The next prime is 28422313. The reversal of 28422304 is 40322482.

It is not an unprimeable number, because it can be changed into a prime (28422301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3094 + ... + 8149.

It is an arithmetic number, because the mean of its divisors is an integer number (2361240).

Almost surely, 2^28422304 is an apocalyptic number.

It is an amenable number.

28422304 is a deficient number, since it is larger than the sum of its proper divisors (28247456).

28422304 is a wasteful number, since it uses less digits than its factorization.

28422304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11332 (or 11324 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 28422304 is about 5331.2572625976. The cubic root of 28422304 is about 305.1779092826.

Adding to 28422304 its reverse (40322482), we get a palindrome (68744786).

It can be divided in two parts, 284 and 22304, that multiplied together give a palindrome (6334336).

The spelling of 28422304 in words is "twenty-eight million, four hundred twenty-two thousand, three hundred four".