222006724 has 12 divisors (see below), whose sum is σ = 393834364. Its totient is φ = 109482624.

The previous prime is 222006683. The next prime is 222006727. The reversal of 222006724 is 427600222.

It can be written as a sum of positive squares in 2 ways, for example, as 148596100 + 73410624 = 12190^2 + 8568^2 .

It is not an unprimeable number, because it can be changed into a prime (222006727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379857 + ... + 380440.

Almost surely, 2^222006724 is an apocalyptic number.

It is an amenable number.

222006724 is a deficient number, since it is larger than the sum of its proper divisors (171827640).

222006724 is a wasteful number, since it uses less digits than its factorization.

222006724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760374 (or 760372 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 222006724 is about 14899.8900667085. The cubic root of 222006724 is about 605.5110078250.

Adding to 222006724 its reverse (427600222), we get a palindrome (649606946).

The spelling of 222006724 in words is "two hundred twenty-two million, six thousand, seven hundred twenty-four".