216243376 has 40 divisors (see below), whose sum is σ = 424347840. Its totient is φ = 106745856.

The previous prime is 216243367. The next prime is 216243397. The reversal of 216243376 is 673342612.

216243376 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 2×216243376² = 93522395327754752, which contains 22 as substring.

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, 737886 + ... + 738178.

It is an arithmetic number, because the mean of its divisors is an integer number (10608696).

Almost surely, 2^216243376 is an apocalyptic number.

It is an amenable number.

216243376 is a deficient number, since it is larger than the sum of its proper divisors (208104464).

216243376 is a wasteful number, since it uses less digits than its factorization.

216243376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 727 counting only the distinct ones).

The product of its digits is 36288, while the sum is 34.

The square root of 216243376 is about 14705.2159453712. The cubic root of 216243376 is about 600.2252635648.

Adding to 216243376 its reverse (673342612), we get a palindrome (889585988).

The spelling of 216243376 in words is "two hundred sixteen million, two hundred forty-three thousand, three hundred seventy-six".