8587731222 has 48 divisors (see below), whose sum is σ = 21276796320. Its totient is φ = 2452260096.

The previous prime is 8587731211. The next prime is 8587731223. The reversal of 8587731222 is 2221377858.

It is a super-2 number, since 2×8587731222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8587731223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217804 + ... + 254192.

It is an arithmetic number, because the mean of its divisors is an integer number (443266590).

Almost surely, 2^8587731222 is an apocalyptic number.

8587731222 is an abundant number, since it is smaller than the sum of its proper divisors (12689065098).

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

8587731222 is a wasteful number, since it uses less digits than its factorization.

8587731222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38277 (or 38274 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The square root of 8587731222 is about 92670.0125283255. The cubic root of 8587731222 is about 2047.8248769109.

The spelling of 8587731222 in words is "eight billion, five hundred eighty-seven million, seven hundred thirty-one thousand, two hundred twenty-two".