218327530 has 8 divisors (see below), whose sum is σ = 392989572. Its totient is φ = 87331008.

The previous prime is 218327521. The next prime is 218327531. The reversal of 218327530 is 35723812.

218327530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 208196041 + 10131489 = 14429^2 + 3183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 218327492 and 218327501.

It is not an unprimeable number, because it can be changed into a prime (218327531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10916367 + ... + 10916386.

Almost surely, 2^218327530 is an apocalyptic number.

218327530 is a deficient number, since it is larger than the sum of its proper divisors (174662042).

218327530 is a wasteful number, since it uses less digits than its factorization.

218327530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21832760.

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

The square root of 218327530 is about 14775.9104626415. The cubic root of 218327530 is about 602.1474254742.

The spelling of 218327530 in words is "two hundred eighteen million, three hundred twenty-seven thousand, five hundred thirty".