27640244 has 12 divisors (see below), whose sum is σ = 48407268. Its totient is φ = 13809600.

The previous prime is 27640243. The next prime is 27640267. The reversal of 27640244 is 44204672.

It can be written as a sum of positive squares in 2 ways, for example, as 2439844 + 25200400 = 1562^2 + 5020^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27640241) 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, 8714 + ... + 11454.

It is an arithmetic number, because the mean of its divisors is an integer number (4033939).

Almost surely, 2^27640244 is an apocalyptic number.

It is an amenable number.

27640244 is a deficient number, since it is larger than the sum of its proper divisors (20767024).

27640244 is a wasteful number, since it uses less digits than its factorization.

27640244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5266 (or 5264 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 27640244 is about 5257.3989766804. The cubic root of 27640244 is about 302.3527740188.

The spelling of 27640244 in words is "twenty-seven million, six hundred forty thousand, two hundred forty-four".