216415334 has 8 divisors (see below), whose sum is σ = 325587288. Its totient is φ = 107886240.

The previous prime is 216415319. The next prime is 216415351. The reversal of 216415334 is 433514612.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216415297 and 216415306.

It is a congruent number.

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, 159872 + ... + 161219.

It is an arithmetic number, because the mean of its divisors is an integer number (40698411).

Almost surely, 2^216415334 is an apocalyptic number.

216415334 is a deficient number, since it is larger than the sum of its proper divisors (109171954).

216415334 is a wasteful number, since it uses less digits than its factorization.

216415334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321430.

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

The square root of 216415334 is about 14711.0616204270. The cubic root of 216415334 is about 600.3843222932.

Adding to 216415334 its reverse (433514612), we get a palindrome (649929946).

The spelling of 216415334 in words is "two hundred sixteen million, four hundred fifteen thousand, three hundred thirty-four".