27131389 has 8 divisors (see below), whose sum is σ = 27721440. Its totient is φ = 26544336.

The previous prime is 27131387. The next prime is 27131437. The reversal of 27131389 is 98313172.

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 27131389 - 2¹ = 27131387 is a prime.

It is a super-2 number, since 2×27131389² = 1472224538138642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27131387) 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, 32394 + ... + 33220.

It is an arithmetic number, because the mean of its divisors is an integer number (3465180).

Almost surely, 2^27131389 is an apocalyptic number.

It is an amenable number.

27131389 is a deficient number, since it is larger than the sum of its proper divisors (590051).

27131389 is an equidigital number, since it uses as much as digits as its factorization.

27131389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499.

The product of its digits is 9072, while the sum is 34.

The square root of 27131389 is about 5208.7799915143. The cubic root of 27131389 is about 300.4858387037.

The spelling of 27131389 in words is "twenty-seven million, one hundred thirty-one thousand, three hundred eighty-nine".