28528588422 has 16 divisors (see below), whose sum is σ = 63396863280. Its totient is φ = 9509529456.

The previous prime is 28528588411. The next prime is 28528588463. The reversal of 28528588422 is 22488582582.

It is a happy number.

28528588422 is a `hidden beast` number, since 2 + 8 + 52 + 8 + 588 + 4 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 528307193 = 28528588422 / (2 + 8 + 5 + 2 + 8 + 5 + 8 + 8 + 4 + 2 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264153543 + ... + 264153650.

It is an arithmetic number, because the mean of its divisors is an integer number (3962303955).

Almost surely, 2^28528588422 is an apocalyptic number.

28528588422 is an abundant number, since it is smaller than the sum of its proper divisors (34868274858).

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

28528588422 is a wasteful number, since it uses less digits than its factorization.

28528588422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528307204 (or 528307198 counting only the distinct ones).

The product of its digits is 6553600, while the sum is 54.

The spelling of 28528588422 in words is "twenty-eight billion, five hundred twenty-eight million, five hundred eighty-eight thousand, four hundred twenty-two".