216334538 has 8 divisors (see below), whose sum is σ = 370859232. Its totient is φ = 92714796.

The previous prime is 216334493. The next prime is 216334549. The reversal of 216334538 is 835433612.

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 = 216334498 and 216334507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7726220 + ... + 7726247.

It is an arithmetic number, because the mean of its divisors is an integer number (46357404).

Almost surely, 2^216334538 is an apocalyptic number.

216334538 is a deficient number, since it is larger than the sum of its proper divisors (154524694).

216334538 is a wasteful number, since it uses less digits than its factorization.

216334538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15452476.

The product of its digits is 51840, while the sum is 35.

The square root of 216334538 is about 14708.3152672221. The cubic root of 216334538 is about 600.3095976288.

The spelling of 216334538 in words is "two hundred sixteen million, three hundred thirty-four thousand, five hundred thirty-eight".