218626242 has 16 divisors (see below), whose sum is σ = 437408640. Its totient is φ = 72849392.

The previous prime is 218626241. The next prime is 218626249. The reversal of 218626242 is 242626812.

218626242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (218626241) 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, 20008 + ... + 28940.

It is an arithmetic number, because the mean of its divisors is an integer number (27338040).

Almost surely, 2^218626242 is an apocalyptic number.

218626242 is an abundant number, since it is smaller than the sum of its proper divisors (218782398).

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

218626242 is a wasteful number, since it uses less digits than its factorization.

218626242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13017.

The product of its digits is 18432, while the sum is 33.

The square root of 218626242 is about 14786.0150818265. The cubic root of 218626242 is about 602.4219162710.

The spelling of 218626242 in words is "two hundred eighteen million, six hundred twenty-six thousand, two hundred forty-two".