216493273 has 8 divisors (see below), whose sum is σ = 226812096. Its totient is φ = 206250000.

The previous prime is 216493247. The next prime is 216493279. The reversal of 216493273 is 372394612.

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

It is a cyclic number.

It is not a de Polignac number, because 216493273 - 2⁵ = 216493241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216493279) 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 7 ways as a sum of consecutive naturals, for example, 12978 + ... + 24523.

It is an arithmetic number, because the mean of its divisors is an integer number (28351512).

Almost surely, 2^216493273 is an apocalyptic number.

216493273 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

216493273 is a deficient number, since it is larger than the sum of its proper divisors (10318823).

216493273 is a wasteful number, since it uses less digits than its factorization.

216493273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37775.

The product of its digits is 54432, while the sum is 37.

The square root of 216493273 is about 14713.7103750210. The cubic root of 216493273 is about 600.4563870227.

The spelling of 216493273 in words is "two hundred sixteen million, four hundred ninety-three thousand, two hundred seventy-three".