27930005 has 16 divisors (see below), whose sum is σ = 35232384. Its totient is φ = 21228480.

The previous prime is 27929983. The next prime is 27930013. The reversal of 27930005 is 50003972.

It is not a de Polignac number, because 27930005 - 2¹⁰ = 27928981 is a prime.

It is a Duffinian number.

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 in 15 ways as a sum of consecutive naturals, for example, 6200 + ... + 9710.

It is an arithmetic number, because the mean of its divisors is an integer number (2202024).

Almost surely, 2^27930005 is an apocalyptic number.

It is an amenable number.

27930005 is a deficient number, since it is larger than the sum of its proper divisors (7302379).

27930005 is a wasteful number, since it uses less digits than its factorization.

27930005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3596.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 27930005 is about 5284.8845777368. The cubic root of 27930005 is about 303.4056550441.

Adding to 27930005 its reverse (50003972), we get a palindrome (77933977).

The spelling of 27930005 in words is "twenty-seven million, nine hundred thirty thousand, five".