22368636 has 48 divisors (see below), whose sum is σ = 58731680. Its totient is φ = 7453296.

The previous prime is 22368629. The next prime is 22368641. The reversal of 22368636 is 63686322.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22368636.

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 15 ways as a sum of consecutive naturals, for example, 7470 + ... + 10026.

Almost surely, 2^22368636 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 22368636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29365840).

22368636 is an abundant number, since it is smaller than the sum of its proper divisors (36363044).

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

22368636 is an equidigital number, since it uses as much as digits as its factorization.

22368636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582 (or 2562 counting only the distinct ones).

The product of its digits is 62208, while the sum is 36.

The square root of 22368636 is about 4729.5492385639. The cubic root of 22368636 is about 281.7603214737.

The spelling of 22368636 in words is "twenty-two million, three hundred sixty-eight thousand, six hundred thirty-six".