28222354368 has 784 divisors, whose sum is σ = 99499724800. Its totient is φ = 7860602880.

The previous prime is 28222354343. The next prime is 28222354397. The reversal of 28222354368 is 86345322282.

It is a happy number.

28222354368 is a `hidden beast` number, since 2 + 8 + 22 + 23 + 543 + 68 = 666.

It is a congruent number.

It is an unprimeable number.

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 111 ways as a sum of consecutive naturals, for example, 357244953 + ... + 357245031.

Almost surely, 2^28222354368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28222354368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49749862400).

28222354368 is an abundant number, since it is smaller than the sum of its proper divisors (71277370432).

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

28222354368 is a wasteful number, since it uses less digits than its factorization.

28222354368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 147 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

The spelling of 28222354368 in words is "twenty-eight billion, two hundred twenty-two million, three hundred fifty-four thousand, three hundred sixty-eight".