27205047 has 12 divisors (see below), whose sum is σ = 39342160. Its totient is φ = 18115488.

The previous prime is 27205037. The next prime is 27205069. The reversal of 27205047 is 74050272.

It is not a de Polignac number, because 27205047 - 2¹⁴ = 27188663 is a prime.

It is a super-2 number, since 2×27205047² = 1480229164544418, 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 27205047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27205037) 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 11 ways as a sum of consecutive naturals, for example, 11979 + ... + 14067.

Almost surely, 2^27205047 is an apocalyptic number.

27205047 is a deficient number, since it is larger than the sum of its proper divisors (12137113).

27205047 is a wasteful number, since it uses less digits than its factorization.

27205047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3542 (or 3539 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 27205047 is about 5215.8457607564. The cubic root of 27205047 is about 300.7575189402.

The spelling of 27205047 in words is "twenty-seven million, two hundred five thousand, forty-seven".