215115234 has 16 divisors (see below), whose sum is σ = 438348672. Its totient is φ = 70352048.

The previous prime is 215115227. The next prime is 215115253. The reversal of 215115234 is 432511512.

It is a happy number.

215115234 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 an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337914 + ... + 338549.

It is an arithmetic number, because the mean of its divisors is an integer number (27396792).

Almost surely, 2^215115234 is an apocalyptic number.

215115234 is an abundant number, since it is smaller than the sum of its proper divisors (223233438).

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

215115234 is a wasteful number, since it uses less digits than its factorization.

215115234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676521.

The product of its digits is 1200, while the sum is 24.

The square root of 215115234 is about 14666.8072190235. The cubic root of 215115234 is about 599.1796511129.

Adding to 215115234 its reverse (432511512), we get a palindrome (647626746).

The spelling of 215115234 in words is "two hundred fifteen million, one hundred fifteen thousand, two hundred thirty-four".