28524222 has 48 divisors (see below), whose sum is σ = 63938160. Its totient is φ = 9184896.

The previous prime is 28524217. The next prime is 28524227. The reversal of 28524222 is 22242582.

It is an interprime number because it is at equal distance from previous prime (28524217) and next prime (28524227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28524227) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 105904 + ... + 106172.

It is an arithmetic number, because the mean of its divisors is an integer number (1332045).

Almost surely, 2^28524222 is an apocalyptic number.

28524222 is an abundant number, since it is smaller than the sum of its proper divisors (35413938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28524222 is a wasteful number, since it uses less digits than its factorization.

28524222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 454 counting only the distinct ones).

The product of its digits is 5120, while the sum is 27.

The square root of 28524222 is about 5340.8072423558. The cubic root of 28524222 is about 305.5422477853.

The spelling of 28524222 in words is "twenty-eight million, five hundred twenty-four thousand, two hundred twenty-two".