215133226 has 24 divisors (see below), whose sum is σ = 409513536. Its totient is φ = 83817720.

The previous prime is 215133197. The next prime is 215133227. The reversal of 215133226 is 622331512.

It is a self number, because there is not a number n which added to its sum of digits gives 215133226.

It is not an unprimeable number, because it can be changed into a prime (215133227) 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 11 ways as a sum of consecutive naturals, for example, 98706 + ... + 100861.

It is an arithmetic number, because the mean of its divisors is an integer number (17063064).

Almost surely, 2^215133226 is an apocalyptic number.

215133226 is a deficient number, since it is larger than the sum of its proper divisors (194380310).

215133226 is a wasteful number, since it uses less digits than its factorization.

215133226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199594 (or 199587 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 215133226 is about 14667.4205639574. The cubic root of 215133226 is about 599.1963555547.

Adding to 215133226 its reverse (622331512), we get a palindrome (837464738).

The spelling of 215133226 in words is "two hundred fifteen million, one hundred thirty-three thousand, two hundred twenty-six".