216534146 has 8 divisors (see below), whose sum is σ = 341896080. Its totient is φ = 102568788.

The previous prime is 216534139. The next prime is 216534169. The reversal of 216534146 is 641435612.

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

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, 2849096 + ... + 2849171.

It is an arithmetic number, because the mean of its divisors is an integer number (42737010).

Almost surely, 2^216534146 is an apocalyptic number.

216534146 is a deficient number, since it is larger than the sum of its proper divisors (125361934).

216534146 is a wasteful number, since it uses less digits than its factorization.

216534146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5698288.

The product of its digits is 17280, while the sum is 32.

The square root of 216534146 is about 14715.0992521287. The cubic root of 216534146 is about 600.4941725071.

Adding to 216534146 its reverse (641435612), we get a palindrome (857969758).

The spelling of 216534146 in words is "two hundred sixteen million, five hundred thirty-four thousand, one hundred forty-six".