28533522 has 16 divisors (see below), whose sum is σ = 57185280. Its totient is φ = 9491472.

The previous prime is 28533509. The next prime is 28533569. The reversal of 28533522 is 22533582.

It is a self number, because there is not a number n which added to its sum of digits gives 28533522.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1618 + ... + 7725.

It is an arithmetic number, because the mean of its divisors is an integer number (3574080).

Almost surely, 2^28533522 is an apocalyptic number.

28533522 is an abundant number, since it is smaller than the sum of its proper divisors (28651758).

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

28533522 is a wasteful number, since it uses less digits than its factorization.

28533522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9857.

The product of its digits is 14400, while the sum is 30.

The square root of 28533522 is about 5341.6778263014. The cubic root of 28533522 is about 305.5754503753.

The spelling of 28533522 in words is "twenty-eight million, five hundred thirty-three thousand, five hundred twenty-two".