27144442 has 12 divisors (see below), whose sum is σ = 44090190. Its totient is φ = 12528048.

The previous prime is 27144413. The next prime is 27144443. The reversal of 27144442 is 24444172.

It can be written as a sum of positive squares in 3 ways, for example, as 18844281 + 8300161 = 4341^2 + 2881^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 27144442.

It is not an unprimeable number, because it can be changed into a prime (27144443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 39817 + ... + 40492.

Almost surely, 2^27144442 is an apocalyptic number.

27144442 is a deficient number, since it is larger than the sum of its proper divisors (16945748).

27144442 is a wasteful number, since it uses less digits than its factorization.

27144442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80337 (or 80324 counting only the distinct ones).

The product of its digits is 7168, while the sum is 28.

The square root of 27144442 is about 5210.0328213937. The cubic root of 27144442 is about 300.5340192179.

The spelling of 27144442 in words is "twenty-seven million, one hundred forty-four thousand, four hundred forty-two".