219998816 has 24 divisors (see below), whose sum is σ = 447096384. Its totient is φ = 106450560.

The previous prime is 219998809. The next prime is 219998827. The reversal of 219998816 is 618899912.

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, 109895 + ... + 111878.

It is an arithmetic number, because the mean of its divisors is an integer number (18629016).

Almost surely, 2^219998816 is an apocalyptic number.

It is an amenable number.

219998816 is an abundant number, since it is smaller than the sum of its proper divisors (227097568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

219998816 is a wasteful number, since it uses less digits than its factorization.

219998816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221814 (or 221806 counting only the distinct ones).

The product of its digits is 559872, while the sum is 53.

The square root of 219998816 is about 14832.3570615058. The cubic root of 219998816 is about 603.6799907106.

The spelling of 219998816 in words is "two hundred nineteen million, nine hundred ninety-eight thousand, eight hundred sixteen".