27672971 has 4 divisors (see below), whose sum is σ = 27767712. Its totient is φ = 27578232.

The previous prime is 27672959. The next prime is 27672973. The reversal of 27672971 is 17927672.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27672971 - 2¹⁸ = 27410827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27672973) 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 3 ways as a sum of consecutive naturals, for example, 46931 + ... + 47516.

It is an arithmetic number, because the mean of its divisors is an integer number (6941928).

Almost surely, 2^27672971 is an apocalyptic number.

27672971 is a deficient number, since it is larger than the sum of its proper divisors (94741).

27672971 is an equidigital number, since it uses as much as digits as its factorization.

27672971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94740.

The product of its digits is 74088, while the sum is 41.

The square root of 27672971 is about 5260.5105265554. The cubic root of 27672971 is about 302.4720589815.

The spelling of 27672971 in words is "twenty-seven million, six hundred seventy-two thousand, nine hundred seventy-one".