27963913 has 8 divisors (see below), whose sum is σ = 28616328. Its totient is φ = 27316224.

The previous prime is 27963911. The next prime is 27963931. The reversal of 27963913 is 31936972.

It can be written as a sum of positive squares in 4 ways, for example, as 15657849 + 12306064 = 3957^2 + 3508^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27963913 - 2¹ = 27963911 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27963911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12595 + ... + 14647.

It is an arithmetic number, because the mean of its divisors is an integer number (3577041).

Almost surely, 2^27963913 is an apocalyptic number.

It is an amenable number.

27963913 is a deficient number, since it is larger than the sum of its proper divisors (652415).

27963913 is a wasteful number, since it uses less digits than its factorization.

27963913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2363.

The product of its digits is 61236, while the sum is 40.

The square root of 27963913 is about 5288.0916217479. The cubic root of 27963913 is about 303.5283870722.

The spelling of 27963913 in words is "twenty-seven million, nine hundred sixty-three thousand, nine hundred thirteen".