22742266 has 8 divisors (see below), whose sum is σ = 34839360. Its totient is φ = 11129148.

The previous prime is 22742197. The next prime is 22742273. The reversal of 22742266 is 66224722.

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

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, 120876 + ... + 121063.

It is an arithmetic number, because the mean of its divisors is an integer number (4354920).

Almost surely, 2^22742266 is an apocalyptic number.

22742266 is a deficient number, since it is larger than the sum of its proper divisors (12097094).

22742266 is a wasteful number, since it uses less digits than its factorization.

22742266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241988.

The product of its digits is 16128, while the sum is 31.

The square root of 22742266 is about 4768.8851946760. The cubic root of 22742266 is about 283.3204426277.

Adding to 22742266 its reverse (66224722), we get a palindrome (88966988).

The spelling of 22742266 in words is "twenty-two million, seven hundred forty-two thousand, two hundred sixty-six".