218482744 has 16 divisors (see below), whose sum is σ = 409974120. Its totient is φ = 109156320.

The previous prime is 218482741. The next prime is 218482751. The reversal of 218482744 is 447284812.

It is a junction number, because it is equal to n+sod(n) for n = 218482697 and 218482706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218482741) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1039 + ... + 20929.

Almost surely, 2^218482744 is an apocalyptic number.

It is an amenable number.

218482744 is a deficient number, since it is larger than the sum of its proper divisors (191491376).

218482744 is a wasteful number, since it uses less digits than its factorization.

218482744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21270 (or 21266 counting only the distinct ones).

The product of its digits is 114688, while the sum is 40.

The square root of 218482744 is about 14781.1617946628. The cubic root of 218482744 is about 602.2900851001.

The spelling of 218482744 in words is "two hundred eighteen million, four hundred eighty-two thousand, seven hundred forty-four".