8781290868 has 96 divisors (see below), whose sum is σ = 23885971200. Its totient is φ = 2458967040.

The previous prime is 8781290851. The next prime is 8781290887. The reversal of 8781290868 is 8680921878.

It is a super-2 number, since 2×8781290868² (a number of 21 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 1498408 + ... + 1504256.

It is an arithmetic number, because the mean of its divisors is an integer number (248812200).

Almost surely, 2^8781290868 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8781290868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11942985600).

8781290868 is an abundant number, since it is smaller than the sum of its proper divisors (15104680332).

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

8781290868 is a wasteful number, since it uses less digits than its factorization.

8781290868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6217 (or 6215 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 57.

The square root of 8781290868 is about 93708.5421293064. The cubic root of 8781290868 is about 2063.0960818295.

The spelling of 8781290868 in words is "eight billion, seven hundred eighty-one million, two hundred ninety thousand, eight hundred sixty-eight".