27120897 has 6 divisors (see below), whose sum is σ = 39174642. Its totient is φ = 18080592.

The previous prime is 27120893. The next prime is 27120901. The reversal of 27120897 is 79802172.

It is an interprime number because it is at equal distance from previous prime (27120893) and next prime (27120901).

It can be written as a sum of positive squares in only one way, i.e., 15992001 + 11128896 = 3999^2 + 3336^2 .

It is not a de Polignac number, because 27120897 - 2² = 27120893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27120893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1506708 + ... + 1506725.

It is an arithmetic number, because the mean of its divisors is an integer number (6529107).

Almost surely, 2^27120897 is an apocalyptic number.

It is an amenable number.

27120897 is a deficient number, since it is larger than the sum of its proper divisors (12053745).

27120897 is a wasteful number, since it uses less digits than its factorization.

27120897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013439 (or 3013436 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 27120897 is about 5207.7727484982. The cubic root of 27120897 is about 300.4471000076.

The spelling of 27120897 in words is "twenty-seven million, one hundred twenty thousand, eight hundred ninety-seven".