28285722863 has 8 divisors (see below), whose sum is σ = 29224341120. Its totient is φ = 27348740640.

The previous prime is 28285722841. The next prime is 28285722869. The reversal of 28285722863 is 36822758282.

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

It is not a de Polignac number, because 28285722863 - 2²⁶ = 28218613999 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 (28285722869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373808 + ... + 443061.

It is an arithmetic number, because the mean of its divisors is an integer number (3653042640).

Almost surely, 2^28285722863 is an apocalyptic number.

28285722863 is a deficient number, since it is larger than the sum of its proper divisors (938618257).

28285722863 is a wasteful number, since it uses less digits than its factorization.

28285722863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818017.

The product of its digits is 5160960, while the sum is 53.

The spelling of 28285722863 in words is "twenty-eight billion, two hundred eighty-five million, seven hundred twenty-two thousand, eight hundred sixty-three".