216498388 has 12 divisors (see below), whose sum is σ = 398812960. Its totient is φ = 102551832.

The previous prime is 216498361. The next prime is 216498397. The reversal of 216498388 is 883894612.

216498388 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 1424256 + ... + 1424407.

Almost surely, 2^216498388 is an apocalyptic number.

It is an amenable number.

216498388 is a deficient number, since it is larger than the sum of its proper divisors (182314572).

216498388 is a wasteful number, since it uses less digits than its factorization.

216498388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848686 (or 2848684 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 216498388 is about 14713.8841914703. The cubic root of 216498388 is about 600.4611158998.

The spelling of 216498388 in words is "two hundred sixteen million, four hundred ninety-eight thousand, three hundred eighty-eight".