8561226730 has 32 divisors (see below), whose sum is σ = 17823867264. Its totient is φ = 2899910976.

The previous prime is 8561226691. The next prime is 8561226731. The reversal of 8561226730 is 376221658.

It is not an unprimeable number, because it can be changed into a prime (8561226731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 730957 + ... + 742576.

It is an arithmetic number, because the mean of its divisors is an integer number (556995852).

Almost surely, 2^8561226730 is an apocalyptic number.

8561226730 is an abundant number, since it is smaller than the sum of its proper divisors (9262640534).

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

8561226730 is a wasteful number, since it uses less digits than its factorization.

8561226730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473630.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 8561226730 is about 92526.8973326135. The cubic root of 8561226730 is about 2045.7159577684.

The spelling of 8561226730 in words is "eight billion, five hundred sixty-one million, two hundred twenty-six thousand, seven hundred thirty".