22043436 has 24 divisors (see below), whose sum is σ = 51624384. Its totient is φ = 7320720.

The previous prime is 22043419. The next prime is 22043443. The reversal of 22043436 is 63434022.

It is a happy number.

It is a super-4 number, since 4×22043436⁴ (a number of 30 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151 + ... + 6641.

It is an arithmetic number, because the mean of its divisors is an integer number (2151016).

Almost surely, 2^22043436 is an apocalyptic number.

It is an amenable number.

22043436 is an abundant number, since it is smaller than the sum of its proper divisors (29580948).

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

22043436 is a wasteful number, since it uses less digits than its factorization.

22043436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781 (or 6779 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 22043436 is about 4695.0437697640. The cubic root of 22043436 is about 280.3882199876.

Adding to 22043436 its reverse (63434022), we get a palindrome (85477458).

The spelling of 22043436 in words is "twenty-two million, forty-three thousand, four hundred thirty-six".