28717739724 has 24 divisors (see below), whose sum is σ = 67190652928. Its totient is φ = 9546495120.

The previous prime is 28717739683. The next prime is 28717739761. The reversal of 28717739724 is 42793771782.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3256012 + ... + 3264819.

Almost surely, 2^28717739724 is an apocalyptic number.

It is an amenable number.

28717739724 is an abundant number, since it is smaller than the sum of its proper divisors (38472913204).

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

28717739724 is a wasteful number, since it uses less digits than its factorization.

28717739724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6521205 (or 6521203 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 57.

The spelling of 28717739724 in words is "twenty-eight billion, seven hundred seventeen million, seven hundred thirty-nine thousand, seven hundred twenty-four".