28736713248 has 96 divisors (see below), whose sum is σ = 80175513600. Its totient is φ = 8986588416.

The previous prime is 28736713223. The next prime is 28736713253. The reversal of 28736713248 is 84231763782.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 28736713248.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111393 + ... + 264351.

It is an arithmetic number, because the mean of its divisors is an integer number (835161600).

Almost surely, 2^28736713248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28736713248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40087756800).

28736713248 is an abundant number, since it is smaller than the sum of its proper divisors (51438800352).

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

28736713248 is a wasteful number, since it uses less digits than its factorization.

28736713248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153094 (or 153086 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 51.

The spelling of 28736713248 in words is "twenty-eight billion, seven hundred thirty-six million, seven hundred thirteen thousand, two hundred forty-eight".