28442522 has 16 divisors (see below), whose sum is σ = 43945440. Its totient is φ = 13798512.

The previous prime is 28442497. The next prime is 28442537. The reversal of 28442522 is 22524482.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13004 + ... + 15032.

It is an arithmetic number, because the mean of its divisors is an integer number (2746590).

Almost surely, 2^28442522 is an apocalyptic number.

28442522 is a deficient number, since it is larger than the sum of its proper divisors (15502918).

28442522 is a wasteful number, since it uses less digits than its factorization.

28442522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2237.

The product of its digits is 10240, while the sum is 29.

The square root of 28442522 is about 5333.1531011213. The cubic root of 28442522 is about 305.2502541628.

The spelling of 28442522 in words is "twenty-eight million, four hundred forty-two thousand, five hundred twenty-two".