22436436 has 48 divisors (see below), whose sum is σ = 58963968. Its totient is φ = 6578400.

The previous prime is 22436429. The next prime is 22436507. The reversal of 22436436 is 63463422.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1351 + ... + 6833.

It is an arithmetic number, because the mean of its divisors is an integer number (1228416).

Almost surely, 2^22436436 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 22436436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29481984).

22436436 is an abundant number, since it is smaller than the sum of its proper divisors (36527532).

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

22436436 is a wasteful number, since it uses less digits than its factorization.

22436436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5532 (or 5530 counting only the distinct ones).

The product of its digits is 20736, while the sum is 30.

The square root of 22436436 is about 4736.7115174982. The cubic root of 22436436 is about 282.0447089719.

Adding to 22436436 its reverse (63463422), we get a palindrome (85899858).

The spelling of 22436436 in words is "twenty-two million, four hundred thirty-six thousand, four hundred thirty-six".