28528122 has 32 divisors (see below), whose sum is σ = 67313664. Its totient is φ = 7887600.

The previous prime is 28528117. The next prime is 28528163. The reversal of 28528122 is 22182582.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 28528122.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9654 + ... + 12257.

It is an arithmetic number, because the mean of its divisors is an integer number (2103552).

Almost surely, 2^28528122 is an apocalyptic number.

28528122 is an abundant number, since it is smaller than the sum of its proper divisors (38785542).

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

28528122 is a wasteful number, since it uses less digits than its factorization.

28528122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21954.

The product of its digits is 5120, while the sum is 30.

The square root of 28528122 is about 5341.1723432220. The cubic root of 28528122 is about 305.5561723306.

The spelling of 28528122 in words is "twenty-eight million, five hundred twenty-eight thousand, one hundred twenty-two".