218353072 has 20 divisors (see below), whose sum is σ = 483496336. Its totient is φ = 93579840.

The previous prime is 218353063. The next prime is 218353127. The reversal of 218353072 is 270353812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974679 + ... + 974902.

Almost surely, 2^218353072 is an apocalyptic number.

It is an amenable number.

218353072 is an abundant number, since it is smaller than the sum of its proper divisors (265143264).

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

218353072 is a wasteful number, since it uses less digits than its factorization.

218353072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949596 (or 1949590 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 218353072 is about 14776.7747495859. The cubic root of 218353072 is about 602.1709061744.

It can be divided in two parts, 2183 and 53072, that added together give a palindrome (55255).

The spelling of 218353072 in words is "two hundred eighteen million, three hundred fifty-three thousand, seventy-two".