216838342 has 16 divisors (see below), whose sum is σ = 387885312. Its totient is φ = 88890120.

The previous prime is 216838337. The next prime is 216838357. The reversal of 216838342 is 243838612.

216838342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×216838342² = 94037733122617928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336384 + ... + 337027.

It is an arithmetic number, because the mean of its divisors is an integer number (24242832).

Almost surely, 2^216838342 is an apocalyptic number.

216838342 is a deficient number, since it is larger than the sum of its proper divisors (171046970).

216838342 is a wasteful number, since it uses less digits than its factorization.

216838342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673443.

The product of its digits is 55296, while the sum is 37.

The square root of 216838342 is about 14725.4318103070. The cubic root of 216838342 is about 600.7752404981.

The spelling of 216838342 in words is "two hundred sixteen million, eight hundred thirty-eight thousand, three hundred forty-two".