28807640013 has 8 divisors (see below), whose sum is σ = 39734676000. Its totient is φ = 18542848688.

The previous prime is 28807640011. The next prime is 28807640033. The reversal of 28807640013 is 31004670882.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28807640013 - 2¹ = 28807640011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28807640011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165561063 + ... + 165561236.

It is an arithmetic number, because the mean of its divisors is an integer number (4966834500).

Almost surely, 2^28807640013 is an apocalyptic number.

It is an amenable number.

28807640013 is a deficient number, since it is larger than the sum of its proper divisors (10927035987).

28807640013 is a wasteful number, since it uses less digits than its factorization.

28807640013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331122331.

The product of its (nonzero) digits is 64512, while the sum is 39.

The spelling of 28807640013 in words is "twenty-eight billion, eight hundred seven million, six hundred forty thousand, thirteen".