22215436 has 12 divisors (see below), whose sum is σ = 38931928. Its totient is φ = 11092032.

The previous prime is 22215409. The next prime is 22215491. The reversal of 22215436 is 63451222.

It is a self number, because there is not a number n which added to its sum of digits gives 22215436.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 381 + ... + 6676.

Almost surely, 2^22215436 is an apocalyptic number.

It is an amenable number.

22215436 is a deficient number, since it is larger than the sum of its proper divisors (16716492).

22215436 is a wasteful number, since it uses less digits than its factorization.

22215436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7848 (or 7846 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 22215436 is about 4713.3253653869. The cubic root of 22215436 is about 281.1156002461.

Adding to 22215436 its reverse (63451222), we get a palindrome (85666658).

The spelling of 22215436 in words is "twenty-two million, two hundred fifteen thousand, four hundred thirty-six".