27982011 has 4 divisors (see below), whose sum is σ = 37309352. Its totient is φ = 18654672.

The previous prime is 27982001. The next prime is 27982021. The reversal of 27982011 is 11028972.

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

It is an interprime number because it is at equal distance from previous prime (27982001) and next prime (27982021).

It is not a de Polignac number, because 27982011 - 2⁵ = 27981979 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27982011.

It is not an unprimeable number, because it can be changed into a prime (27982001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4663666 + ... + 4663671.

It is an arithmetic number, because the mean of its divisors is an integer number (9327338).

Almost surely, 2^27982011 is an apocalyptic number.

27982011 is a deficient number, since it is larger than the sum of its proper divisors (9327341).

27982011 is an equidigital number, since it uses as much as digits as its factorization.

27982011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9327340.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 27982011 is about 5289.8025482999. The cubic root of 27982011 is about 303.5938532573.

The spelling of 27982011 in words is "twenty-seven million, nine hundred eighty-two thousand, eleven".