266222442 has 8 divisors (see below), whose sum is σ = 532444896. Its totient is φ = 88740812.

The previous prime is 266222419. The next prime is 266222449. The reversal of 266222442 is 244222662.

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

266222442 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (266222449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22185198 + ... + 22185209.

It is an arithmetic number, because the mean of its divisors is an integer number (66555612).

Almost surely, 2^266222442 is an apocalyptic number.

266222442 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.

266222442 is a wasteful number, since it uses less digits than its factorization.

266222442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44370412.

The product of its digits is 18432, while the sum is 30.

The square root of 266222442 is about 16316.3244022666. The cubic root of 266222442 is about 643.3019792559.

The spelling of 266222442 in words is "two hundred sixty-six million, two hundred twenty-two thousand, four hundred forty-two".