8861311220 has 24 divisors (see below), whose sum is σ = 18623946600. Its totient is φ = 3541630592.

The previous prime is 8861311201. The next prime is 8861311229. The reversal of 8861311220 is 221131688.

It can be written as a sum of positive squares in 4 ways, for example, as 1566101476 + 7295209744 = 39574^2 + 85412^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8861311229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155675 + ... + 204834.

It is an arithmetic number, because the mean of its divisors is an integer number (775997775).

Almost surely, 2^8861311220 is an apocalyptic number.

It is an amenable number.

8861311220 is an abundant number, since it is smaller than the sum of its proper divisors (9762635380).

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

8861311220 is a wasteful number, since it uses less digits than its factorization.

8861311220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361747 (or 361745 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 8861311220 is about 94134.5378700082. The cubic root of 8861311220 is about 2069.3438623051.

The spelling of 8861311220 in words is "eight billion, eight hundred sixty-one million, three hundred eleven thousand, two hundred twenty".