27047431 has 8 divisors (see below), whose sum is σ = 28897280. Its totient is φ = 25240248.

The previous prime is 27047389. The next prime is 27047441. The reversal of 27047431 is 13474072.

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 27047431 - 2¹³ = 27039239 is a prime.

It is a super-2 number, since 2×27047431² = 1463127047399522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27047431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27047441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9351 + ... + 11896.

It is an arithmetic number, because the mean of its divisors is an integer number (3612160).

Almost surely, 2^27047431 is an apocalyptic number.

27047431 is a deficient number, since it is larger than the sum of its proper divisors (1849849).

27047431 is a wasteful number, since it uses less digits than its factorization.

27047431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21333.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 27047431 is about 5200.7144701473. The cubic root of 27047431 is about 300.1755676037.

The spelling of 27047431 in words is "twenty-seven million, forty-seven thousand, four hundred thirty-one".