218441072 has 10 divisors (see below), whose sum is σ = 423229608. Its totient is φ = 109220528.

The previous prime is 218441057. The next prime is 218441099. The reversal of 218441072 is 270144812.

It is a congruent number.

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, 6826268 + ... + 6826299.

Almost surely, 2^218441072 is an apocalyptic number.

It is an amenable number.

218441072 is a deficient number, since it is larger than the sum of its proper divisors (204788536).

218441072 is a wasteful number, since it uses less digits than its factorization.

218441072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13652575 (or 13652569 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 218441072 is about 14779.7520953499. The cubic root of 218441072 is about 602.2517903468.

Adding to 218441072 its reverse (270144812), we get a palindrome (488585884).

The spelling of 218441072 in words is "two hundred eighteen million, four hundred forty-one thousand, seventy-two".