215204234 has 8 divisors (see below), whose sum is σ = 368921568. Its totient is φ = 92230380.

The previous prime is 215204233. The next prime is 215204239. The reversal of 215204234 is 432402512.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (215204233) by changing a digit.

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, 7685852 + ... + 7685879.

It is an arithmetic number, because the mean of its divisors is an integer number (46115196).

Almost surely, 2^215204234 is an apocalyptic number.

215204234 is a deficient number, since it is larger than the sum of its proper divisors (153717334).

215204234 is a wasteful number, since it uses less digits than its factorization.

215204234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15371740.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 215204234 is about 14669.8409670998. The cubic root of 215204234 is about 599.2622729327.

Adding to 215204234 its reverse (432402512), we get a palindrome (647606746).

The spelling of 215204234 in words is "two hundred fifteen million, two hundred four thousand, two hundred thirty-four".