22136320 has 40 divisors (see below), whose sum is σ = 53081424. Its totient is φ = 8853504.

The previous prime is 22136297. The next prime is 22136321. The reversal of 22136320 is 2363122.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22136321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1764 + ... + 6883.

Almost surely, 2^22136320 is an apocalyptic number.

22136320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22136320 is an abundant number, since it is smaller than the sum of its proper divisors (30945104).

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

22136320 is an frugal number, since it uses more digits than its factorization.

22136320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8670 (or 8654 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 22136320 is about 4704.9250791059. The cubic root of 22136320 is about 280.7814902721.

Adding to 22136320 its reverse (2363122), we get a palindrome (24499442).

The spelling of 22136320 in words is "twenty-two million, one hundred thirty-six thousand, three hundred twenty".