216243034 has 16 divisors (see below), whose sum is σ = 372246336. Its totient is φ = 92289600.

The previous prime is 216243031. The next prime is 216243037. The reversal of 216243034 is 430342612.

It is an interprime number because it is at equal distance from previous prime (216243031) and next prime (216243037).

It is a super-2 number, since 2×216243034² = 93522099507050312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (216243031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28672 + ... + 35419.

It is an arithmetic number, because the mean of its divisors is an integer number (23265396).

Almost surely, 2^216243034 is an apocalyptic number.

216243034 is a deficient number, since it is larger than the sum of its proper divisors (156003302).

216243034 is a wasteful number, since it uses less digits than its factorization.

216243034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64341.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 216243034 is about 14705.2043168397. The cubic root of 216243034 is about 600.2249471356.

Adding to 216243034 its reverse (430342612), we get a palindrome (646585646).

The spelling of 216243034 in words is "two hundred sixteen million, two hundred forty-three thousand, thirty-four".