22197760 has 160 divisors (see below), whose sum is σ = 61871040. Its totient is φ = 7569408.

The previous prime is 22197739. The next prime is 22197779. The reversal of 22197760 is 6779122.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 765426 + ... + 765454.

It is an arithmetic number, because the mean of its divisors is an integer number (386694).

Almost surely, 2^22197760 is an apocalyptic number.

22197760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22197760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30935520).

22197760 is an abundant number, since it is smaller than the sum of its proper divisors (39673280).

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

22197760 is a wasteful number, since it uses less digits than its factorization.

22197760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 72 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 22197760 is about 4711.4498829978. The cubic root of 22197760 is about 281.0410227044.

The spelling of 22197760 in words is "twenty-two million, one hundred ninety-seven thousand, seven hundred sixty".