218398848 has 64 divisors (see below), whose sum is σ = 592513920. Its totient is φ = 71244800.

The previous prime is 218398837. The next prime is 218398861. The reversal of 218398848 is 848893812.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 218398848.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11998 + ... + 24098.

It is an arithmetic number, because the mean of its divisors is an integer number (9258030).

Almost surely, 2^218398848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218398848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296256960).

218398848 is an abundant number, since it is smaller than the sum of its proper divisors (374115072).

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

218398848 is a wasteful number, since it uses less digits than its factorization.

218398848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12165 (or 12153 counting only the distinct ones).

The product of its digits is 884736, while the sum is 51.

The square root of 218398848 is about 14778.3235855763. The cubic root of 218398848 is about 602.2129833618.

The spelling of 218398848 in words is "two hundred eighteen million, three hundred ninety-eight thousand, eight hundred forty-eight".