27381897 has 12 divisors (see below), whose sum is σ = 40827904. Its totient is φ = 17665560.

The previous prime is 27381889. The next prime is 27381901. The reversal of 27381897 is 79818372.

It is not a de Polignac number, because 27381897 - 2³ = 27381889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27381847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48793 + ... + 49350.

Almost surely, 2^27381897 is an apocalyptic number.

It is an amenable number.

27381897 is a deficient number, since it is larger than the sum of its proper divisors (13446007).

27381897 is a wasteful number, since it uses less digits than its factorization.

27381897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98180 (or 98177 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 27381897 is about 5232.7714454197. The cubic root of 27381897 is about 301.4078165081.

It can be divided in two parts, 27 and 381897, that added together give a square (381924 = 618²).

The spelling of 27381897 in words is "twenty-seven million, three hundred eighty-one thousand, eight hundred ninety-seven".