215113226 has 8 divisors (see below), whose sum is σ = 324009444. Its totient is φ = 107110080.

The previous prime is 215113207. The next prime is 215113253. The reversal of 215113226 is 622311512.

It can be written as a sum of positive squares in 2 ways, for example, as 182223001 + 32890225 = 13499^2 + 5735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 222665 + ... + 223628.

Almost surely, 2^215113226 is an apocalyptic number.

215113226 is a deficient number, since it is larger than the sum of its proper divisors (108896218).

215113226 is a wasteful number, since it uses less digits than its factorization.

215113226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446536.

The product of its digits is 720, while the sum is 23.

The square root of 215113226 is about 14666.7387649743. The cubic root of 215113226 is about 599.1777867533.

Adding to 215113226 its reverse (622311512), we get a palindrome (837424738).

The spelling of 215113226 in words is "two hundred fifteen million, one hundred thirteen thousand, two hundred twenty-six".