27424147 has 4 divisors (see below), whose sum is σ = 27458136. Its totient is φ = 27390160.

The previous prime is 27424127. The next prime is 27424151. The reversal of 27424147 is 74142472.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27424147 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27424127) 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 3 ways as a sum of consecutive naturals, for example, 15754 + ... + 17407.

It is an arithmetic number, because the mean of its divisors is an integer number (6864534).

Almost surely, 2^27424147 is an apocalyptic number.

27424147 is a deficient number, since it is larger than the sum of its proper divisors (33989).

27424147 is an equidigital number, since it uses as much as digits as its factorization.

27424147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33988.

The product of its digits is 12544, while the sum is 31.

The square root of 27424147 is about 5236.8069469859. The cubic root of 27424147 is about 301.5627599504.

It can be divided in two parts, 2742 and 4147, that added together give a square (6889 = 83²).

The spelling of 27424147 in words is "twenty-seven million, four hundred twenty-four thousand, one hundred forty-seven".