216387376 has 10 divisors (see below), whose sum is σ = 419250572. Its totient is φ = 108193680.

The previous prime is 216387343. The next prime is 216387383. The reversal of 216387376 is 673783612.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6762090 + ... + 6762121.

Almost surely, 2^216387376 is an apocalyptic number.

It is an amenable number.

216387376 is a deficient number, since it is larger than the sum of its proper divisors (202863196).

216387376 is a wasteful number, since it uses less digits than its factorization.

216387376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13524219 (or 13524213 counting only the distinct ones).

The product of its digits is 254016, while the sum is 43.

The square root of 216387376 is about 14710.1113523997. Note that the first 3 decimals coincide. The cubic root of 216387376 is about 600.3584672742.

The spelling of 216387376 in words is "two hundred sixteen million, three hundred eighty-seven thousand, three hundred seventy-six".