28288786713 has 16 divisors (see below), whose sum is σ = 42022803456. Its totient is φ = 16779937040.

The previous prime is 28288786667. The next prime is 28288786739. The reversal of 28288786713 is 31768788282.

It is a cyclic number.

It is not a de Polignac number, because 28288786713 - 2⁶ = 28288786649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28288786763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9117981 + ... + 9121082.

It is an arithmetic number, because the mean of its divisors is an integer number (2626425216).

Almost surely, 2^28288786713 is an apocalyptic number.

It is an amenable number.

28288786713 is a deficient number, since it is larger than the sum of its proper divisors (13734016743).

28288786713 is a wasteful number, since it uses less digits than its factorization.

28288786713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18239124.

The product of its digits is 14450688, while the sum is 60.

The spelling of 28288786713 in words is "twenty-eight billion, two hundred eighty-eight million, seven hundred eighty-six thousand, seven hundred thirteen".