27670391 has 8 divisors (see below), whose sum is σ = 31818624. Its totient is φ = 23571000.

The previous prime is 27670337. The next prime is 27670417. The reversal of 27670391 is 19307672.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27670391 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 (27670991) 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, 10985 + ... + 13266.

It is an arithmetic number, because the mean of its divisors is an integer number (3977328).

Almost surely, 2^27670391 is an apocalyptic number.

27670391 is a deficient number, since it is larger than the sum of its proper divisors (4148233).

27670391 is a wasteful number, since it uses less digits than its factorization.

27670391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24421.

The product of its (nonzero) digits is 15876, while the sum is 35.

The square root of 27670391 is about 5260.2652974921. The cubic root of 27670391 is about 302.4626586878.

The spelling of 27670391 in words is "twenty-seven million, six hundred seventy thousand, three hundred ninety-one".