28047750708 has 12 divisors (see below), whose sum is σ = 65444751680. Its totient is φ = 9349250232.

The previous prime is 28047750707. The next prime is 28047750727. The reversal of 28047750708 is 80705774082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×28047750708² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28047750707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1168656268 + ... + 1168656291.

Almost surely, 2^28047750708 is an apocalyptic number.

It is an amenable number.

28047750708 is an abundant number, since it is smaller than the sum of its proper divisors (37397000972).

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

28047750708 is a wasteful number, since it uses less digits than its factorization.

28047750708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2337312566 (or 2337312564 counting only the distinct ones).

The product of its (nonzero) digits is 878080, while the sum is 48.

The spelling of 28047750708 in words is "twenty-eight billion, forty-seven million, seven hundred fifty thousand, seven hundred eight".