28712743968 has 48 divisors (see below), whose sum is σ = 75381848640. Its totient is φ = 9569531136.

The previous prime is 28712743937. The next prime is 28712743973. The reversal of 28712743968 is 86934721782.

It is a tau number, because it is divible by the number of its divisors (48).

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 7 ways as a sum of consecutive naturals, for example, 812818 + ... + 847406.

It is an arithmetic number, because the mean of its divisors is an integer number (1570455180).

Almost surely, 2^28712743968 is an apocalyptic number.

It is an amenable number.

28712743968 is an abundant number, since it is smaller than the sum of its proper divisors (46669104672).

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

28712743968 is a wasteful number, since it uses less digits than its factorization.

28712743968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43249 (or 43241 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 57.

The spelling of 28712743968 in words is "twenty-eight billion, seven hundred twelve million, seven hundred forty-three thousand, nine hundred sixty-eight".