27944165 has 16 divisors (see below), whose sum is σ = 34546176. Its totient is φ = 21686400.

The previous prime is 27944101. The next prime is 27944167. The reversal of 27944165 is 56144972.

It is not a de Polignac number, because 27944165 - 2⁶ = 27944101 is a prime.

It is a super-3 number, since 3×27944165³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27944167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55304 + ... + 55806.

It is an arithmetic number, because the mean of its divisors is an integer number (2159136).

Almost surely, 2^27944165 is an apocalyptic number.

It is an amenable number.

27944165 is a deficient number, since it is larger than the sum of its proper divisors (6602011).

27944165 is a wasteful number, since it uses less digits than its factorization.

27944165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820.

The product of its digits is 60480, while the sum is 38.

The square root of 27944165 is about 5286.2240777326. The cubic root of 27944165 is about 303.4569200814.

It can be divided in two parts, 279 and 44165, that added together give a palindrome (44444).

The spelling of 27944165 in words is "twenty-seven million, nine hundred forty-four thousand, one hundred sixty-five".