218628448 has 24 divisors (see below), whose sum is σ = 445268880. Its totient is φ = 105544320.

The previous prime is 218628439. The next prime is 218628457. The reversal of 218628448 is 844826812.

It is an interprime number because it is at equal distance from previous prime (218628439) and next prime (218628457).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116868 + ... + 118723.

It is an arithmetic number, because the mean of its divisors is an integer number (18552870).

Almost surely, 2^218628448 is an apocalyptic number.

It is an amenable number.

218628448 is an abundant number, since it is smaller than the sum of its proper divisors (226640432).

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

218628448 is a wasteful number, since it uses less digits than its factorization.

218628448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235630 (or 235622 counting only the distinct ones).

The product of its digits is 196608, while the sum is 43.

The square root of 218628448 is about 14786.0896791545. The cubic root of 218628448 is about 602.4239424661.

The spelling of 218628448 in words is "two hundred eighteen million, six hundred twenty-eight thousand, four hundred forty-eight".