215136422 has 8 divisors (see below), whose sum is σ = 323806896. Its totient is φ = 107200792.

The previous prime is 215136421. The next prime is 215136451. The reversal of 215136422 is 224631512.

It is a happy number.

215136422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 215136391 and 215136400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215136421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182978 + ... + 184149.

It is an arithmetic number, because the mean of its divisors is an integer number (40475862).

Almost surely, 2^215136422 is an apocalyptic number.

215136422 is a deficient number, since it is larger than the sum of its proper divisors (108670474).

215136422 is a wasteful number, since it uses less digits than its factorization.

215136422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367422.

The product of its digits is 2880, while the sum is 26.

The square root of 215136422 is about 14667.5295124980. The cubic root of 215136422 is about 599.1993227426.

Adding to 215136422 its reverse (224631512), we get a palindrome (439767934).

The spelling of 215136422 in words is "two hundred fifteen million, one hundred thirty-six thousand, four hundred twenty-two".