27960487 has 4 divisors (see below), whose sum is σ = 27994120. Its totient is φ = 27926856.

The previous prime is 27960473. The next prime is 27960497. The reversal of 27960487 is 78406972.

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-27960487 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 (27960497) 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, 15537 + ... + 17242.

It is an arithmetic number, because the mean of its divisors is an integer number (6998530).

Almost surely, 2^27960487 is an apocalyptic number.

27960487 is a deficient number, since it is larger than the sum of its proper divisors (33633).

27960487 is an equidigital number, since it uses as much as digits as its factorization.

27960487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33632.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 27960487 is about 5287.7676764397. The cubic root of 27960487 is about 303.5159909682.

The spelling of 27960487 in words is "twenty-seven million, nine hundred sixty thousand, four hundred eighty-seven".