28317890774 has 8 divisors (see below), whose sum is σ = 42481755288. Its totient is φ = 14157305680.

The previous prime is 28317890761. The next prime is 28317890801. The reversal of 28317890774 is 47709871382.

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 (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 798152 + ... + 832875.

It is an arithmetic number, because the mean of its divisors is an integer number (5310219411).

Almost surely, 2^28317890774 is an apocalyptic number.

28317890774 is a deficient number, since it is larger than the sum of its proper divisors (14163864514).

28317890774 is a wasteful number, since it uses less digits than its factorization.

28317890774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639710.

The product of its (nonzero) digits is 4741632, while the sum is 56.

The spelling of 28317890774 in words is "twenty-eight billion, three hundred seventeen million, eight hundred ninety thousand, seven hundred seventy-four".