22297836 has 48 divisors (see below), whose sum is σ = 57068928. Its totient is φ = 6720000.

The previous prime is 22297831. The next prime is 22297841. The reversal of 22297836 is 63879222.

It is an interprime number because it is at equal distance from previous prime (22297831) and next prime (22297841).

It is a junction number, because it is equal to n+sod(n) for n = 22297794 and 22297803.

It is not an unprimeable number, because it can be changed into a prime (22297831) 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 15 ways as a sum of consecutive naturals, for example, 32796 + ... + 33468.

It is an arithmetic number, because the mean of its divisors is an integer number (1188936).

Almost surely, 2^22297836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22297836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28534464).

22297836 is an abundant number, since it is smaller than the sum of its proper divisors (34771092).

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

22297836 is a wasteful number, since it uses less digits than its factorization.

22297836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942 (or 940 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 22297836 is about 4722.0584494477. The cubic root of 22297836 is about 281.4627364291.

It can be divided in two parts, 222978 and 36, that multiplied together give a palindrome (8027208).

The spelling of 22297836 in words is "twenty-two million, two hundred ninety-seven thousand, eight hundred thirty-six".