218030236 has 24 divisors (see below), whose sum is σ = 417931920. Its totient is φ = 99063552.

The previous prime is 218030231. The next prime is 218030237. The reversal of 218030236 is 632030812.

It is a self number, because there is not a number n which added to its sum of digits gives 218030236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218030231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53310 + ... + 57253.

It is an arithmetic number, because the mean of its divisors is an integer number (17413830).

Almost surely, 2^218030236 is an apocalyptic number.

It is an amenable number.

218030236 is a deficient number, since it is larger than the sum of its proper divisors (199901684).

218030236 is a wasteful number, since it uses less digits than its factorization.

218030236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110613 (or 110611 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 218030236 is about 14765.8469448928. The cubic root of 218030236 is about 601.8739889966.

The spelling of 218030236 in words is "two hundred eighteen million, thirty thousand, two hundred thirty-six".