2197729422 has 128 divisors (see below), whose sum is σ = 5696179200. Its totient is φ = 622857600.

The previous prime is 2197729403. The next prime is 2197729423. The reversal of 2197729422 is 2249277912.

It is a happy number.

2197729422 is a `hidden beast` number, since 219 + 7 + 7 + 2 + 9 + 422 = 666.

2197729422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2197729422² = 9660029224648908168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2197729423) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5480422 + ... + 5480822.

It is an arithmetic number, because the mean of its divisors is an integer number (44501400).

Almost surely, 2^2197729422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2197729422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2848089600).

2197729422 is an abundant number, since it is smaller than the sum of its proper divisors (3498449778).

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

2197729422 is an equidigital number, since it uses as much as digits as its factorization.

2197729422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 592 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 2197729422 is about 46879.9469069665. The cubic root of 2197729422 is about 1300.1438542979.

The spelling of 2197729422 in words is "two billion, one hundred ninety-seven million, seven hundred twenty-nine thousand, four hundred twenty-two".