215606234 has 8 divisors (see below), whose sum is σ = 323906580. Its totient is φ = 107637376.

The previous prime is 215606233. The next prime is 215606263. The reversal of 215606234 is 432606512.

It can be written as a sum of positive squares in 2 ways, for example, as 173317225 + 42289009 = 13165^2 + 6503^2 .

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 = 215606197 and 215606206.

It is not an unprimeable number, because it can be changed into a prime (215606233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81239 + ... + 83850.

Almost surely, 2^215606234 is an apocalyptic number.

215606234 is a deficient number, since it is larger than the sum of its proper divisors (108300346).

215606234 is a wasteful number, since it uses less digits than its factorization.

215606234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165744.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 215606234 is about 14683.5361544827. The cubic root of 215606234 is about 599.6351800742.

The spelling of 215606234 in words is "two hundred fifteen million, six hundred six thousand, two hundred thirty-four".