27240047 has 4 divisors (see below), whose sum is σ = 27321216. Its totient is φ = 27158880.

The previous prime is 27240013. The next prime is 27240049. The reversal of 27240047 is 74004272.

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

It is a cyclic number.

It is not a de Polignac number, because 27240047 - 2⁸ = 27239791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27239998 and 27240025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27240049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40079 + ... + 40752.

It is an arithmetic number, because the mean of its divisors is an integer number (6830304).

Almost surely, 2^27240047 is an apocalyptic number.

27240047 is a deficient number, since it is larger than the sum of its proper divisors (81169).

27240047 is an equidigital number, since it uses as much as digits as its factorization.

27240047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81168.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 27240047 is about 5219.1998428878. The cubic root of 27240047 is about 300.8864411236.

The spelling of 27240047 in words is "twenty-seven million, two hundred forty thousand, forty-seven".