222222770 has 64 divisors (see below), whose sum is σ = 501645312. Its totient is φ = 68856000.

The previous prime is 222222751. The next prime is 222222773. The reversal of 222222770 is 77222222.

It is not an unprimeable number, because it can be changed into a prime (222222773) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 146315 + ... + 147825.

It is an arithmetic number, because the mean of its divisors is an integer number (7838208).

Almost surely, 2^222222770 is an apocalyptic number.

222222770 is an abundant number, since it is smaller than the sum of its proper divisors (279422542).

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

222222770 is a wasteful number, since it uses less digits than its factorization.

222222770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 222222770 is about 14907.1382230125. The cubic root of 222222770 is about 605.7073619661.

Adding to 222222770 its reverse (77222222), we get a palindrome (299444992).

The spelling of 222222770 in words is "two hundred twenty-two million, two hundred twenty-two thousand, seven hundred seventy".