27690266 has 4 divisors (see below), whose sum is σ = 41535402. Its totient is φ = 13845132.

The previous prime is 27690259. The next prime is 27690269. The reversal of 27690266 is 66209672.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 14938225 + 12752041 = 3865^2 + 3571^2 .

It is not an unprimeable number, because it can be changed into a prime (27690269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6922565 + ... + 6922568.

Almost surely, 2^27690266 is an apocalyptic number.

27690266 is a deficient number, since it is larger than the sum of its proper divisors (13845136).

27690266 is a wasteful number, since it uses less digits than its factorization.

27690266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13845135.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 27690266 is about 5262.1541216502. The cubic root of 27690266 is about 302.5350586601.

The spelling of 27690266 in words is "twenty-seven million, six hundred ninety thousand, two hundred sixty-six".