22043136 has 80 divisors (see below), whose sum is σ = 59710464. Its totient is φ = 7225344.

The previous prime is 22043129. The next prime is 22043137. The reversal of 22043136 is 63134022.

It is a happy number.

It is a zygodrome in base 4.

It is not an unprimeable number, because it can be changed into a prime (22043137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 173505 + ... + 173631.

Almost surely, 2^22043136 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 22043136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29855232).

22043136 is an abundant number, since it is smaller than the sum of its proper divisors (37667328).

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

22043136 is a wasteful number, since it uses less digits than its factorization.

22043136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 22043136 is about 4695.0118210714. The cubic root of 22043136 is about 280.3869480013.

Adding to 22043136 its reverse (63134022), we get a palindrome (85177158).

The spelling of 22043136 in words is "twenty-two million, forty-three thousand, one hundred thirty-six".