22197584720 has 40 divisors (see below), whose sum is σ = 53274209280. Its totient is φ = 8592612480.

The previous prime is 22197584707. The next prime is 22197584737. The reversal of 22197584720 is 2748579122.

It is a tau number, because it is divible by the number of its divisors (40).

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, 4472840 + ... + 4477799.

It is an arithmetic number, because the mean of its divisors is an integer number (1331855232).

Almost surely, 2^22197584720 is an apocalyptic number.

22197584720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22197584720 is an abundant number, since it is smaller than the sum of its proper divisors (31076624560).

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

22197584720 is a wasteful number, since it uses less digits than its factorization.

22197584720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8950683 (or 8950677 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 22197584720 in words is "twenty-two billion, one hundred ninety-seven million, five hundred eighty-four thousand, seven hundred twenty".