28087995222 has 384 divisors, whose sum is σ = 79490211840. Its totient is φ = 6987202560.

The previous prime is 28087995109. The next prime is 28087995227. The reversal of 28087995222 is 22259978082.

28087995222 is a `hidden beast` number, since 28 + 0 + 8 + 7 + 99 + 522 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28087995227) 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 191 ways as a sum of consecutive naturals, for example, 145533558 + ... + 145533750.

It is an arithmetic number, because the mean of its divisors is an integer number (207005760).

Almost surely, 2^28087995222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28087995222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39745105920).

28087995222 is an abundant number, since it is smaller than the sum of its proper divisors (51402216618).

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

28087995222 is a wasteful number, since it uses less digits than its factorization.

28087995222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 28087995222 in words is "twenty-eight billion, eighty-seven million, nine hundred ninety-five thousand, two hundred twenty-two".