28317717087 has 32 divisors (see below), whose sum is σ = 42625440000. Its totient is φ = 16564343040.

The previous prime is 28317717083. The next prime is 28317717089. The reversal of 28317717087 is 78071771382.

It is not a de Polignac number, because 28317717087 - 2² = 28317717083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28317717083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4838539 + ... + 4844387.

It is an arithmetic number, because the mean of its divisors is an integer number (1332045000).

Almost surely, 2^28317717087 is an apocalyptic number.

28317717087 is a deficient number, since it is larger than the sum of its proper divisors (14307722913).

28317717087 is a wasteful number, since it uses less digits than its factorization.

28317717087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10951.

The product of its (nonzero) digits is 921984, while the sum is 51.

The spelling of 28317717087 in words is "twenty-eight billion, three hundred seventeen million, seven hundred seventeen thousand, eighty-seven".