28860172886 has 8 divisors (see below), whose sum is σ = 43718876064. Its totient is φ = 14287214200.

The previous prime is 28860172879. The next prime is 28860172903. The reversal of 28860172886 is 68827106882.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71435870 + ... + 71436273.

It is an arithmetic number, because the mean of its divisors is an integer number (5464859508).

Almost surely, 2^28860172886 is an apocalyptic number.

28860172886 is a deficient number, since it is larger than the sum of its proper divisors (14858703178).

28860172886 is a wasteful number, since it uses less digits than its factorization.

28860172886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142872246.

The product of its (nonzero) digits is 4128768, while the sum is 56.

The spelling of 28860172886 in words is "twenty-eight billion, eight hundred sixty million, one hundred seventy-two thousand, eight hundred eighty-six".