28868446863 has 6 divisors (see below), whose sum is σ = 41698867704. Its totient is φ = 19245631236.

The previous prime is 28868446823. The next prime is 28868446877. The reversal of 28868446863 is 36864486882.

It is a happy number.

It is not a de Polignac number, because 28868446863 - 2¹⁰ = 28868445839 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28868446863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28868446823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1603802595 + ... + 1603802612.

It is an arithmetic number, because the mean of its divisors is an integer number (6949811284).

Almost surely, 2^28868446863 is an apocalyptic number.

28868446863 is a deficient number, since it is larger than the sum of its proper divisors (12830420841).

28868446863 is a wasteful number, since it uses less digits than its factorization.

28868446863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207605213 (or 3207605210 counting only the distinct ones).

The product of its digits is 84934656, while the sum is 63.

The spelling of 28868446863 in words is "twenty-eight billion, eight hundred sixty-eight million, four hundred forty-six thousand, eight hundred sixty-three".