216827998 has 4 divisors (see below), whose sum is σ = 325242000. Its totient is φ = 108413998.

The previous prime is 216827953. The next prime is 216828023. The reversal of 216827998 is 899728612.

216827998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54206998 + ... + 54207001.

It is an arithmetic number, because the mean of its divisors is an integer number (81310500).

Almost surely, 2^216827998 is an apocalyptic number.

216827998 is a deficient number, since it is larger than the sum of its proper divisors (108414002).

216827998 is a wasteful number, since it uses less digits than its factorization.

216827998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108414001.

The product of its digits is 870912, while the sum is 52.

The square root of 216827998 is about 14725.0805770291. The cubic root of 216827998 is about 600.7656872708.

The spelling of 216827998 in words is "two hundred sixteen million, eight hundred twenty-seven thousand, nine hundred ninety-eight".