27480447 has 18 divisors (see below), whose sum is σ = 40494272. Its totient is φ = 17958096.

The previous prime is 27480443. The next prime is 27480457. The reversal of 27480447 is 74408472.

It is not a de Polignac number, because 27480447 - 2² = 27480443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27480443) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 24738 + ... + 25824.

Almost surely, 2^27480447 is an apocalyptic number.

27480447 is a deficient number, since it is larger than the sum of its proper divisors (13013825).

27480447 is a wasteful number, since it uses less digits than its factorization.

27480447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 50176, while the sum is 36.

The square root of 27480447 is about 5242.1796039434. The cubic root of 27480447 is about 301.7689818417.

The spelling of 27480447 in words is "twenty-seven million, four hundred eighty thousand, four hundred forty-seven".