22215356 has 6 divisors (see below), whose sum is σ = 38876880. Its totient is φ = 11107676.

The previous prime is 22215341. The next prime is 22215367. The reversal of 22215356 is 65351222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2776916 + ... + 2776923.

It is an arithmetic number, because the mean of its divisors is an integer number (6479480).

Almost surely, 2^22215356 is an apocalyptic number.

It is an amenable number.

22215356 is a deficient number, since it is larger than the sum of its proper divisors (16661524).

22215356 is a wasteful number, since it uses less digits than its factorization.

22215356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5553843 (or 5553841 counting only the distinct ones).

The product of its digits is 3600, while the sum is 26.

The square root of 22215356 is about 4713.3168788020. The cubic root of 22215356 is about 281.1152628039.

Adding to 22215356 its reverse (65351222), we get a palindrome (87566578).

The spelling of 22215356 in words is "twenty-two million, two hundred fifteen thousand, three hundred fifty-six".