28285990886 has 8 divisors (see below), whose sum is σ = 42501269160. Its totient is φ = 14118901168.

The previous prime is 28285990861. The next prime is 28285990903. The reversal of 28285990886 is 68809958282.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12045671 + ... + 12048018.

It is an arithmetic number, because the mean of its divisors is an integer number (5312658645).

Almost surely, 2^28285990886 is an apocalyptic number.

28285990886 is a deficient number, since it is larger than the sum of its proper divisors (14215278274).

28285990886 is a wasteful number, since it uses less digits than its factorization.

28285990886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24094278.

The product of its (nonzero) digits is 39813120, while the sum is 65.

The spelling of 28285990886 in words is "twenty-eight billion, two hundred eighty-five million, nine hundred ninety thousand, eight hundred eighty-six".