22222436 has 6 divisors (see below), whose sum is σ = 38889270. Its totient is φ = 11111216.

The previous prime is 22222433. The next prime is 22222471. The reversal of 22222436 is 63422222.

It can be written as a sum of positive squares in only one way, i.e., 16728100 + 5494336 = 4090^2 + 2344^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222433) by changing a digit.

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 as a sum of consecutive naturals, namely, 2777801 + ... + 2777808.

It is an arithmetic number, because the mean of its divisors is an integer number (6481545).

Almost surely, 2^22222436 is an apocalyptic number.

It is an amenable number.

22222436 is a deficient number, since it is larger than the sum of its proper divisors (16666834).

22222436 is a wasteful number, since it uses less digits than its factorization.

22222436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5555613 (or 5555611 counting only the distinct ones).

The product of its digits is 2304, while the sum is 23.

The square root of 22222436 is about 4714.0678824132. The cubic root of 22222436 is about 281.1451233002.

Adding to 22222436 its reverse (63422222), we get a palindrome (85644658).

The spelling of 22222436 in words is "twenty-two million, two hundred twenty-two thousand, four hundred thirty-six".