8918920224 has 72 divisors (see below), whose sum is σ = 26181372672. Its totient is φ = 2877068160.

The previous prime is 8918920223. The next prime is 8918920261. The reversal of 8918920224 is 4220298198.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (72).

It is a self number, because there is not a number n which added to its sum of digits gives 8918920224.

It is not an unprimeable number, because it can be changed into a prime (8918920223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 490564 + ... + 508419.

It is an arithmetic number, because the mean of its divisors is an integer number (363630176).

Almost surely, 2^8918920224 is an apocalyptic number.

It is an amenable number.

8918920224 is an abundant number, since it is smaller than the sum of its proper divisors (17262452448).

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

8918920224 is a wasteful number, since it uses less digits than its factorization.

8918920224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 999030 (or 999019 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 8918920224 is about 94440.0350698791. The cubic root of 8918920224 is about 2073.8185735319.

The spelling of 8918920224 in words is "eight billion, nine hundred eighteen million, nine hundred twenty thousand, two hundred twenty-four".