215235126 has 12 divisors (see below), whose sum is σ = 466342812. Its totient is φ = 71745036.

The previous prime is 215235121. The next prime is 215235133. The reversal of 215235126 is 621532512.

It is a happy number.

215235126 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 215235126.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215235121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5978736 + ... + 5978771.

It is an arithmetic number, because the mean of its divisors is an integer number (38861901).

Almost surely, 2^215235126 is an apocalyptic number.

215235126 is an abundant number, since it is smaller than the sum of its proper divisors (251107686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215235126 is a wasteful number, since it uses less digits than its factorization.

215235126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11957515 (or 11957512 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 215235126 is about 14670.8938378001. The cubic root of 215235126 is about 599.2909457335.

Adding to 215235126 its reverse (621532512), we get a palindrome (836767638).

The spelling of 215235126 in words is "two hundred fifteen million, two hundred thirty-five thousand, one hundred twenty-six".