216146836 has 12 divisors (see below), whose sum is σ = 380763040. Its totient is φ = 107357400.

The previous prime is 216146771. The next prime is 216146837. The reversal of 216146836 is 638641612.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 216146795 and 216146804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216146837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178326 + ... + 179533.

Almost surely, 2^216146836 is an apocalyptic number.

It is an amenable number.

216146836 is a deficient number, since it is larger than the sum of its proper divisors (164616204).

216146836 is a wasteful number, since it uses less digits than its factorization.

216146836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358014 (or 358012 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 216146836 is about 14701.9330701782. The cubic root of 216146836 is about 600.1359284627.

The spelling of 216146836 in words is "two hundred sixteen million, one hundred forty-six thousand, eight hundred thirty-six".