28447724736 has 84 divisors (see below), whose sum is σ = 81565330392. Its totient is φ = 9479660544.

The previous prime is 28447724717. The next prime is 28447724737. The reversal of 28447724736 is 63742774482.

28447724736 is a `hidden beast` number, since 2 + 84 + 477 + 24 + 73 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (28447724737) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2715220 + ... + 2725676.

It is an arithmetic number, because the mean of its divisors is an integer number (971015838).

Almost surely, 2^28447724736 is an apocalyptic number.

It is an amenable number.

28447724736 is an abundant number, since it is smaller than the sum of its proper divisors (53117605656).

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

28447724736 is a wasteful number, since it uses less digits than its factorization.

28447724736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15198 (or 15185 counting only the distinct ones).

The product of its digits is 12644352, while the sum is 54.

The spelling of 28447724736 in words is "twenty-eight billion, four hundred forty-seven million, seven hundred twenty-four thousand, seven hundred thirty-six".