222540772 has 12 divisors (see below), whose sum is σ = 389552940. Its totient is φ = 111239936.

The previous prime is 222540739. The next prime is 222540793. The reversal of 222540772 is 277045222.

It can be written as a sum of positive squares in 2 ways, for example, as 19307236 + 203233536 = 4394^2 + 14256^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19788 + ... + 28924.

It is an arithmetic number, because the mean of its divisors is an integer number (32462745).

Almost surely, 2^222540772 is an apocalyptic number.

It is an amenable number.

222540772 is a deficient number, since it is larger than the sum of its proper divisors (167012168).

222540772 is a wasteful number, since it uses less digits than its factorization.

222540772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15230 (or 15228 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 222540772 is about 14917.8005081178. The cubic root of 222540772 is about 605.9961477751.

Adding to 222540772 its reverse (277045222), we get a palindrome (499585994).

The spelling of 222540772 in words is "two hundred twenty-two million, five hundred forty thousand, seven hundred seventy-two".