27220706 has 16 divisors (see below), whose sum is σ = 43335000. Its totient is φ = 12779520.

The previous prime is 27220703. The next prime is 27220729. The reversal of 27220706 is 60702272.

It can be written as a sum of positive squares in 4 ways, for example, as 27133681 + 87025 = 5209^2 + 295^2 .

It is not an unprimeable number, because it can be changed into a prime (27220703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21170 + ... + 22418.

Almost surely, 2^27220706 is an apocalyptic number.

27220706 is a deficient number, since it is larger than the sum of its proper divisors (16114294).

27220706 is a wasteful number, since it uses less digits than its factorization.

27220706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909.

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 27220706 is about 5217.3466436494. The cubic root of 27220706 is about 300.8152123856.

Adding to 27220706 its reverse (60702272), we get a palindrome (87922978).

The spelling of 27220706 in words is "twenty-seven million, two hundred twenty thousand, seven hundred six".