27971349 has 8 divisors (see below), whose sum is σ = 42623040. Its totient is φ = 15983616.

The previous prime is 27971347. The next prime is 27971351. The reversal of 27971349 is 94317972.

It is an interprime number because it is at equal distance from previous prime (27971347) and next prime (27971351).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27971349 - 2¹ = 27971347 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 27971349.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27971347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 665964 + ... + 666005.

It is an arithmetic number, because the mean of its divisors is an integer number (5327880).

Almost surely, 2^27971349 is an apocalyptic number.

It is an amenable number.

27971349 is a deficient number, since it is larger than the sum of its proper divisors (14651691).

27971349 is a wasteful number, since it uses less digits than its factorization.

27971349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1331979.

The product of its digits is 95256, while the sum is 42.

The square root of 27971349 is about 5288.7946641933. The cubic root of 27971349 is about 303.5552888516. Note that the first 3 decimals are identical.

The spelling of 27971349 in words is "twenty-seven million, nine hundred seventy-one thousand, three hundred forty-nine".