27872449 has 12 divisors (see below), whose sum is σ = 32095440. Its totient is φ = 24001560.

The previous prime is 27872447. The next prime is 27872459. The reversal of 27872449 is 94427872.

It is not a de Polignac number, because 27872449 - 2¹ = 27872447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27872447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 462 + ... + 7480.

It is an arithmetic number, because the mean of its divisors is an integer number (2674620).

Almost surely, 2^27872449 is an apocalyptic number.

It is an amenable number.

27872449 is a deficient number, since it is larger than the sum of its proper divisors (4222991).

27872449 is a wasteful number, since it uses less digits than its factorization.

27872449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7068 (or 7049 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 27872449 is about 5279.4364282563. The cubic root of 27872449 is about 303.1971000632.

It can be divided in two parts, 278 and 72449, that added together give a palindrome (72727).

The spelling of 27872449 in words is "twenty-seven million, eight hundred seventy-two thousand, four hundred forty-nine".