27390071 has 4 divisors (see below), whose sum is σ = 27409200. Its totient is φ = 27370944.

The previous prime is 27390067. The next prime is 27390073. The reversal of 27390071 is 17009372.

It is a happy number.

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 27390071 - 2² = 27390067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27390073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7226 + ... + 10343.

It is an arithmetic number, because the mean of its divisors is an integer number (6852300).

Almost surely, 2^27390071 is an apocalyptic number.

27390071 is a deficient number, since it is larger than the sum of its proper divisors (19129).

27390071 is a wasteful number, since it uses less digits than its factorization.

27390071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19128.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 27390071 is about 5233.5524264117. The cubic root of 27390071 is about 301.4378054503.

The spelling of 27390071 in words is "twenty-seven million, three hundred ninety thousand, seventy-one".