9222161728 has 56 divisors (see below), whose sum is σ = 20343733760. Its totient is φ = 4119068160.

The previous prime is 9222161687. The next prime is 9222161731. The reversal of 9222161728 is 8271612229.

It is a congruent number.

It is an unprimeable number.

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, 152988 + ... + 204571.

It is an arithmetic number, because the mean of its divisors is an integer number (363280960).

Almost surely, 2^9222161728 is an apocalyptic number.

It is an amenable number.

9222161728 is an abundant number, since it is smaller than the sum of its proper divisors (11121572032).

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

9222161728 is a wasteful number, since it uses less digits than its factorization.

9222161728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357615 (or 357605 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 9222161728 is about 96032.0869709703. The cubic root of 9222161728 is about 2097.0602651964.

The spelling of 9222161728 in words is "nine billion, two hundred twenty-two million, one hundred sixty-one thousand, seven hundred twenty-eight".