28282557422 has 32 divisors (see below), whose sum is σ = 50063007744. Its totient is φ = 11726668800.

The previous prime is 28282557379. The next prime is 28282557437. The reversal of 28282557422 is 22475528282.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 1937483 + ... + 1952025.

It is an arithmetic number, because the mean of its divisors is an integer number (1564468992).

Almost surely, 2^28282557422 is an apocalyptic number.

28282557422 is a deficient number, since it is larger than the sum of its proper divisors (21780450322).

28282557422 is a wasteful number, since it uses less digits than its factorization.

28282557422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19064.

The product of its digits is 1433600, while the sum is 47.

The spelling of 28282557422 in words is "twenty-eight billion, two hundred eighty-two million, five hundred fifty-seven thousand, four hundred twenty-two".