216371632 has 10 divisors (see below), whose sum is σ = 419220068. Its totient is φ = 108185808.

The previous prime is 216371627. The next prime is 216371651. The reversal of 216371632 is 236173612.

It is a junction number, because it is equal to n+sod(n) for n = 216371594 and 216371603.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6761598 + ... + 6761629.

Almost surely, 2^216371632 is an apocalyptic number.

It is an amenable number.

216371632 is a deficient number, since it is larger than the sum of its proper divisors (202848436).

216371632 is a wasteful number, since it uses less digits than its factorization.

216371632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13523235 (or 13523229 counting only the distinct ones).

The product of its digits is 9072, while the sum is 31.

The square root of 216371632 is about 14709.5762005572. The cubic root of 216371632 is about 600.3439065465.

The spelling of 216371632 in words is "two hundred sixteen million, three hundred seventy-one thousand, six hundred thirty-two".