27444137 has 16 divisors (see below), whose sum is σ = 33397632. Its totient is φ = 22014720.

The previous prime is 27444133. The next prime is 27444139. The reversal of 27444137 is 73144472.

It is not a de Polignac number, because 27444137 - 2² = 27444133 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27444133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24563 + ... + 25655.

It is an arithmetic number, because the mean of its divisors is an integer number (2087352).

Almost surely, 2^27444137 is an apocalyptic number.

It is an amenable number.

27444137 is a deficient number, since it is larger than the sum of its proper divisors (5953495).

27444137 is a wasteful number, since it uses less digits than its factorization.

27444137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328.

The product of its digits is 18816, while the sum is 32.

The square root of 27444137 is about 5238.7152050861. The cubic root of 27444137 is about 301.6360138297.

The spelling of 27444137 in words is "twenty-seven million, four hundred forty-four thousand, one hundred thirty-seven".