220312266 has 8 divisors (see below), whose sum is σ = 440624544. Its totient is φ = 73437420.

The previous prime is 220312243. The next prime is 220312271. The reversal of 220312266 is 662213022.

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

220312266 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18359350 + ... + 18359361.

It is an arithmetic number, because the mean of its divisors is an integer number (55078068).

Almost surely, 2^220312266 is an apocalyptic number.

220312266 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

220312266 is a wasteful number, since it uses less digits than its factorization.

220312266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36718716.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 220312266 is about 14842.9197262533. The cubic root of 220312266 is about 603.9665584602.

Adding to 220312266 its reverse (662213022), we get a palindrome (882525288).

The spelling of 220312266 in words is "two hundred twenty million, three hundred twelve thousand, two hundred sixty-six".