28317718552 has 32 divisors (see below), whose sum is σ = 54945360000. Its totient is φ = 13667904000.

The previous prime is 28317718543. The next prime is 28317718573. The reversal of 28317718552 is 25581771382.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 28317718496 and 28317718505.

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 7 ways as a sum of consecutive naturals, for example, 42927 + ... + 241822.

It is an arithmetic number, because the mean of its divisors is an integer number (1717042500).

Almost surely, 2^28317718552 is an apocalyptic number.

It is an amenable number.

28317718552 is a deficient number, since it is larger than the sum of its proper divisors (26627641448).

28317718552 is a wasteful number, since it uses less digits than its factorization.

28317718552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285187 (or 285183 counting only the distinct ones).

The product of its digits is 940800, while the sum is 49.

The spelling of 28317718552 in words is "twenty-eight billion, three hundred seventeen million, seven hundred eighteen thousand, five hundred fifty-two".