218838028 has 6 divisors (see below), whose sum is σ = 382966556. Its totient is φ = 109419012.

The previous prime is 218837999. The next prime is 218838043. The reversal of 218838028 is 820838812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27354750 + ... + 27354757.

Almost surely, 2^218838028 is an apocalyptic number.

It is an amenable number.

218838028 is a deficient number, since it is larger than the sum of its proper divisors (164128528).

218838028 is a wasteful number, since it uses less digits than its factorization.

218838028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54709511 (or 54709509 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 218838028 is about 14793.1750479740. The cubic root of 218838028 is about 602.6163780632.

The spelling of 218838028 in words is "two hundred eighteen million, eight hundred thirty-eight thousand, twenty-eight".