216536342 has 8 divisors (see below), whose sum is σ = 354332232. Its totient is φ = 98425600.

The previous prime is 216536339. The next prime is 216536357. The reversal of 216536342 is 243635612.

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 = 216536299 and 216536308.

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, 4921259 + ... + 4921302.

It is an arithmetic number, because the mean of its divisors is an integer number (44291529).

Almost surely, 2^216536342 is an apocalyptic number.

216536342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216536342 is a deficient number, since it is larger than the sum of its proper divisors (137795890).

216536342 is a wasteful number, since it uses less digits than its factorization.

216536342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9842574.

The product of its digits is 25920, while the sum is 32.

The square root of 216536342 is about 14715.1738691733. The cubic root of 216536342 is about 600.4962024883.

The spelling of 216536342 in words is "two hundred sixteen million, five hundred thirty-six thousand, three hundred forty-two".