218334152 has 8 divisors (see below), whose sum is σ = 409376550. Its totient is φ = 109167072.

The previous prime is 218334133. The next prime is 218334157. The reversal of 218334152 is 251433812.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 208686916 + 9647236 = 14446^2 + 3106^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (218334157) 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 as a sum of consecutive naturals, namely, 13645877 + ... + 13645892.

Almost surely, 2^218334152 is an apocalyptic number.

It is an amenable number.

218334152 is a deficient number, since it is larger than the sum of its proper divisors (191042398).

218334152 is a wasteful number, since it uses less digits than its factorization.

218334152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27291775 (or 27291771 counting only the distinct ones).

The product of its digits is 5760, while the sum is 29.

The square root of 218334152 is about 14776.1345418888. The cubic root of 218334152 is about 602.1535132390.

Adding to 218334152 its reverse (251433812), we get a palindrome (469767964).

The spelling of 218334152 in words is "two hundred eighteen million, three hundred thirty-four thousand, one hundred fifty-two".