27447982 has 4 divisors (see below), whose sum is σ = 41171976. Its totient is φ = 13723990.

The previous prime is 27447971. The next prime is 27448019. The reversal of 27447982 is 28974472.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6861994 + ... + 6861997.

It is an arithmetic number, because the mean of its divisors is an integer number (10292994).

Almost surely, 2^27447982 is an apocalyptic number.

27447982 is a deficient number, since it is larger than the sum of its proper divisors (13723994).

27447982 is a wasteful number, since it uses less digits than its factorization.

27447982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13723993.

The product of its digits is 225792, while the sum is 43.

The square root of 27447982 is about 5239.0821715258. The cubic root of 27447982 is about 301.6500998536.

The spelling of 27447982 in words is "twenty-seven million, four hundred forty-seven thousand, nine hundred eighty-two".