28847284807 has 4 divisors (see below), whose sum is σ = 31469765256. Its totient is φ = 26224804360.

The previous prime is 28847284787. The next prime is 28847284883. The reversal of 28847284807 is 70848274882.

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 28847284807 - 2¹⁵ = 28847252039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28847284307) 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, 1311240208 + ... + 1311240229.

It is an arithmetic number, because the mean of its divisors is an integer number (7867441314).

Almost surely, 2^28847284807 is an apocalyptic number.

28847284807 is a deficient number, since it is larger than the sum of its proper divisors (2622480449).

28847284807 is a wasteful number, since it uses less digits than its factorization.

28847284807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622480448.

The product of its (nonzero) digits is 12845056, while the sum is 58.

The spelling of 28847284807 in words is "twenty-eight billion, eight hundred forty-seven million, two hundred eighty-four thousand, eight hundred seven".