28385186842 has 8 divisors (see below), whose sum is σ = 42650316576. Its totient is φ = 14168414652.

The previous prime is 28385186831. The next prime is 28385186891. The reversal of 28385186842 is 24868158382.

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

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, 12087918 + ... + 12090265.

It is an arithmetic number, because the mean of its divisors is an integer number (5331289572).

Almost surely, 2^28385186842 is an apocalyptic number.

28385186842 is a deficient number, since it is larger than the sum of its proper divisors (14265129734).

28385186842 is a wasteful number, since it uses less digits than its factorization.

28385186842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24178772.

The product of its digits is 5898240, while the sum is 55.

The spelling of 28385186842 in words is "twenty-eight billion, three hundred eighty-five million, one hundred eighty-six thousand, eight hundred forty-two".