218040026 has 4 divisors (see below), whose sum is σ = 327060042. Its totient is φ = 109020012.

The previous prime is 218039993. The next prime is 218040049. The reversal of 218040026 is 620040812.

218040026 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 172948801 + 45091225 = 13151^2 + 6715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 218039983 and 218040010.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54510005 + ... + 54510008.

Almost surely, 2^218040026 is an apocalyptic number.

218040026 is a deficient number, since it is larger than the sum of its proper divisors (109020016).

218040026 is a wasteful number, since it uses less digits than its factorization.

218040026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109020015.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 218040026 is about 14766.1784494161. The cubic root of 218040026 is about 601.8829973162.

Adding to 218040026 its reverse (620040812), we get a palindrome (838080838).

The spelling of 218040026 in words is "two hundred eighteen million, forty thousand, twenty-six".