215116136 has 16 divisors (see below), whose sum is σ = 404636100. Its totient is φ = 107213184.

The previous prime is 215116091. The next prime is 215116141. The reversal of 215116136 is 631611512.

It can be written as a sum of positive squares in 2 ways, for example, as 163993636 + 51122500 = 12806^2 + 7150^2 .

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, 40451 + ... + 45458.

Almost surely, 2^215116136 is an apocalyptic number.

It is an amenable number.

215116136 is a deficient number, since it is larger than the sum of its proper divisors (189519964).

215116136 is a wasteful number, since it uses less digits than its factorization.

215116136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86228 (or 86224 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 215116136 is about 14666.8379686966. The cubic root of 215116136 is about 599.1804885854.

Adding to 215116136 its reverse (631611512), we get a palindrome (846727648).

The spelling of 215116136 in words is "two hundred fifteen million, one hundred sixteen thousand, one hundred thirty-six".