28216424136 has 128 divisors (see below), whose sum is σ = 72394997760. Its totient is φ = 9162720000.

The previous prime is 28216424129. The next prime is 28216424149. The reversal of 28216424136 is 63142461282.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 28216424094 and 28216424103.

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 31 ways as a sum of consecutive naturals, for example, 46484745 + ... + 46485351.

It is an arithmetic number, because the mean of its divisors is an integer number (565585920).

Almost surely, 2^28216424136 is an apocalyptic number.

It is an amenable number.

28216424136 is an abundant number, since it is smaller than the sum of its proper divisors (44178573624).

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

28216424136 is a wasteful number, since it uses less digits than its factorization.

28216424136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 995 (or 991 counting only the distinct ones).

The product of its digits is 110592, while the sum is 39.

The spelling of 28216424136 in words is "twenty-eight billion, two hundred sixteen million, four hundred twenty-four thousand, one hundred thirty-six".