215888234 has 8 divisors (see below), whose sum is σ = 326803620. Its totient is φ = 106953696.

The previous prime is 215888227. The next prime is 215888261. The reversal of 215888234 is 432888512.

It can be written as a sum of positive squares in 2 ways, for example, as 213247609 + 2640625 = 14603^2 + 1625^2 .

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 = 215888191 and 215888200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494939 + ... + 495374.

Almost surely, 2^215888234 is an apocalyptic number.

215888234 is a deficient number, since it is larger than the sum of its proper divisors (110915386).

215888234 is a wasteful number, since it uses less digits than its factorization.

215888234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990424.

The product of its digits is 122880, while the sum is 41.

The square root of 215888234 is about 14693.1356081675. The cubic root of 215888234 is about 599.8964951086.

The spelling of 215888234 in words is "two hundred fifteen million, eight hundred eighty-eight thousand, two hundred thirty-four".