285728887299 has 4 divisors (see below), whose sum is σ = 380971849736. Its totient is φ = 190485924864.

The previous prime is 285728887289. The next prime is 285728887349. The reversal of 285728887299 is 992788827582.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 285728887299 - 2¹¹ = 285728885251 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 285728887299.

It is not an unprimeable number, because it can be changed into a prime (285728887289) 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, 47621481214 + ... + 47621481219.

It is an arithmetic number, because the mean of its divisors is an integer number (95242962434).

Almost surely, 2^285728887299 is an apocalyptic number.

285728887299 is a deficient number, since it is larger than the sum of its proper divisors (95242962437).

285728887299 is an equidigital number, since it uses as much as digits as its factorization.

285728887299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95242962436.

The product of its digits is 650280960, while the sum is 75.

The spelling of 285728887299 in words is "two hundred eighty-five billion, seven hundred twenty-eight million, eight hundred eighty-seven thousand, two hundred ninety-nine".