28917905718 has 16 divisors (see below), whose sum is σ = 62284720176. Its totient is φ = 8897817120.

The previous prime is 28917905717. The next prime is 28917905729. The reversal of 28917905718 is 81750971982.

It is a super-2 number, since 2×28917905718² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28917905713) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 185371113 + ... + 185371268.

It is an arithmetic number, because the mean of its divisors is an integer number (3892795011).

Almost surely, 2^28917905718 is an apocalyptic number.

28917905718 is an abundant number, since it is smaller than the sum of its proper divisors (33366814458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28917905718 is a wasteful number, since it uses less digits than its factorization.

28917905718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370742399.

The product of its (nonzero) digits is 2540160, while the sum is 57.

The spelling of 28917905718 in words is "twenty-eight billion, nine hundred seventeen million, nine hundred five thousand, seven hundred eighteen".