216143026 has 24 divisors (see below), whose sum is σ = 364673232. Its totient is φ = 95957400.

The previous prime is 216143017. The next prime is 216143027. The reversal of 216143026 is 620341612.

It is not an unprimeable number, because it can be changed into a prime (216143027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21 + ... + 20791.

It is an arithmetic number, because the mean of its divisors is an integer number (15194718).

Almost surely, 2^216143026 is an apocalyptic number.

216143026 is a deficient number, since it is larger than the sum of its proper divisors (148530206).

216143026 is a wasteful number, since it uses less digits than its factorization.

216143026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20838 (or 20827 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 216143026 is about 14701.8034948097. The cubic root of 216143026 is about 600.1324022621.

Adding to 216143026 its reverse (620341612), we get a palindrome (836484638).

The spelling of 216143026 in words is "two hundred sixteen million, one hundred forty-three thousand, twenty-six".