28422540636 has 24 divisors (see below), whose sum is σ = 75793441920. Its totient is φ = 8120725872.

The previous prime is 28422540613. The next prime is 28422540683. The reversal of 28422540636 is 63604522482.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 169181706 + ... + 169181873.

It is an arithmetic number, because the mean of its divisors is an integer number (3158060080).

Almost surely, 2^28422540636 is an apocalyptic number.

It is an amenable number.

28422540636 is an abundant number, since it is smaller than the sum of its proper divisors (47370901284).

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

28422540636 is a wasteful number, since it uses less digits than its factorization.

28422540636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338363593 (or 338363591 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 42.

The spelling of 28422540636 in words is "twenty-eight billion, four hundred twenty-two million, five hundred forty thousand, six hundred thirty-six".