22297842 has 90 divisors (see below), whose sum is σ = 59238333. Its totient is φ = 6250608.

The previous prime is 22297841. The next prime is 22297859. The reversal of 22297842 is 24879222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 21150801 + 1147041 = 4599^2 + 1071^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3339.

It is a junction number, because it is equal to n+sod(n) for n = 22297797 and 22297806.

It is not an unprimeable number, because it can be changed into a prime (22297841) by changing a digit.

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 44 ways as a sum of consecutive naturals, for example, 420688 + ... + 420740.

Almost surely, 2^22297842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22297842

22297842 is an abundant number, since it is smaller than the sum of its proper divisors (36940491).

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

22297842 is an equidigital number, since it uses as much as digits as its factorization.

22297842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134 (or 65 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 22297842 is about 4722.0590847638. The cubic root of 22297842 is about 281.4627616749.

The spelling of 22297842 in words is "twenty-two million, two hundred ninety-seven thousand, eight hundred forty-two".