22215736 has 16 divisors (see below), whose sum is σ = 44105040. Its totient is φ = 10454400.

The previous prime is 22215709. The next prime is 22215737. The reversal of 22215736 is 63751222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22215737) by changing a digit.

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, 81540 + ... + 81811.

It is an arithmetic number, because the mean of its divisors is an integer number (2756565).

Almost surely, 2^22215736 is an apocalyptic number.

It is an amenable number.

22215736 is a deficient number, since it is larger than the sum of its proper divisors (21889304).

22215736 is a wasteful number, since it uses less digits than its factorization.

22215736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163374 (or 163370 counting only the distinct ones).

The product of its digits is 5040, while the sum is 28.

The square root of 22215736 is about 4713.3571899443. The cubic root of 22215736 is about 281.1168656470.

Adding to 22215736 its reverse (63751222), we get a palindrome (85966958).

The spelling of 22215736 in words is "twenty-two million, two hundred fifteen thousand, seven hundred thirty-six".