27391387 has 8 divisors (see below), whose sum is σ = 28170560. Its totient is φ = 26618760.

The previous prime is 27391381. The next prime is 27391393. The reversal of 27391387 is 78319372.

It is an interprime number because it is at equal distance from previous prime (27391381) and next prime (27391393).

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

It is a cyclic number.

It is not a de Polignac number, because 27391387 - 2¹¹ = 27389339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27391381) 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, 7564 + ... + 10582.

It is an arithmetic number, because the mean of its divisors is an integer number (3521320).

Almost surely, 2^27391387 is an apocalyptic number.

27391387 is a deficient number, since it is larger than the sum of its proper divisors (779173).

27391387 is a wasteful number, since it uses less digits than its factorization.

27391387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273.

The product of its digits is 63504, while the sum is 40.

The square root of 27391387 is about 5233.6781521221. The cubic root of 27391387 is about 301.4426330610.

The spelling of 27391387 in words is "twenty-seven million, three hundred ninety-one thousand, three hundred eighty-seven".