27681226 has 4 divisors (see below), whose sum is σ = 41521842. Its totient is φ = 13840612.

The previous prime is 27681223. The next prime is 27681239. The reversal of 27681226 is 62218672.

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., 26780625 + 900601 = 5175^2 + 949^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27681191 and 27681200.

It is not an unprimeable number, because it can be changed into a prime (27681223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6920305 + ... + 6920308.

Almost surely, 2^27681226 is an apocalyptic number.

27681226 is a deficient number, since it is larger than the sum of its proper divisors (13840616).

27681226 is a wasteful number, since it uses less digits than its factorization.

27681226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13840615.

The product of its digits is 16128, while the sum is 34.

The square root of 27681226 is about 5261.2950877137. The cubic root of 27681226 is about 302.5021323530.

Adding to 27681226 its reverse (62218672), we get a palindrome (89899898).

The spelling of 27681226 in words is "twenty-seven million, six hundred eighty-one thousand, two hundred twenty-six".