28071048707 has 4 divisors (see below), whose sum is σ = 30230360160. Its totient is φ = 25911737256.

The previous prime is 28071048683. The next prime is 28071048721. The reversal of 28071048707 is 70784017082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28071048707 - 2⁸ = 28071048451 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28071048007) 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, 1079655707 + ... + 1079655732.

It is an arithmetic number, because the mean of its divisors is an integer number (7557590040).

Almost surely, 2^28071048707 is an apocalyptic number.

28071048707 is a deficient number, since it is larger than the sum of its proper divisors (2159311453).

28071048707 is a wasteful number, since it uses less digits than its factorization.

28071048707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2159311452.

The product of its (nonzero) digits is 175616, while the sum is 44.

The spelling of 28071048707 in words is "twenty-eight billion, seventy-one million, forty-eight thousand, seven hundred seven".