22136500 has 24 divisors (see below), whose sum is σ = 48347208. Its totient is φ = 8854400.

The previous prime is 22136497. The next prime is 22136503. The reversal of 22136500 is 563122.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (22136497) and next prime (22136503).

It can be written as a sum of positive squares in 4 ways, for example, as 4613904 + 17522596 = 2148^2 + 4186^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22136503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21637 + ... + 22636.

It is an arithmetic number, because the mean of its divisors is an integer number (2014467).

Almost surely, 2^22136500 is an apocalyptic number.

22136500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22136500 is an abundant number, since it is smaller than the sum of its proper divisors (26210708).

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

22136500 is a wasteful number, since it uses less digits than its factorization.

22136500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44292 (or 44280 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 22136500 is about 4704.9442079583. The cubic root of 22136500 is about 280.7822513220.

Adding to 22136500 its reverse (563122), we get a palindrome (22699622).

The spelling of 22136500 in words is "twenty-two million, one hundred thirty-six thousand, five hundred".