28287166386 has 8 divisors (see below), whose sum is σ = 56574332784. Its totient is φ = 9429055460.

The previous prime is 28287166373. The next prime is 28287166393. The reversal of 28287166386 is 68366178282.

It is a happy number.

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

28287166386 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2357263860 + ... + 2357263871.

It is an arithmetic number, because the mean of its divisors is an integer number (7071791598).

Almost surely, 2^28287166386 is an apocalyptic number.

28287166386 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28287166386 is a wasteful number, since it uses less digits than its factorization.

28287166386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4714527736.

The product of its digits is 9289728, while the sum is 57.

The spelling of 28287166386 in words is "twenty-eight billion, two hundred eighty-seven million, one hundred sixty-six thousand, three hundred eighty-six".