8791000220 has 24 divisors (see below), whose sum is σ = 19547048304. Its totient is φ = 3309552896.

The previous prime is 8791000217. The next prime is 8791000247. The reversal of 8791000220 is 220001978.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12927602 + ... + 12928281.

It is an arithmetic number, because the mean of its divisors is an integer number (814460346).

Almost surely, 2^8791000220 is an apocalyptic number.

It is an amenable number.

8791000220 is an abundant number, since it is smaller than the sum of its proper divisors (10756048084).

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

8791000220 is a wasteful number, since it uses less digits than its factorization.

8791000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25855909 (or 25855907 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 8791000220 is about 93760.3339371186. Note that the first 3 decimals coincide. The cubic root of 8791000220 is about 2063.8561807001.

The spelling of 8791000220 in words is "eight billion, seven hundred ninety-one million, two hundred twenty", and thus it is an aban number.