27996263 has 4 divisors (see below), whose sum is σ = 29643120. Its totient is φ = 26349408.

The previous prime is 27996259. The next prime is 27996299. The reversal of 27996263 is 36269972.

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

It is a cyclic number.

It is not a de Polignac number, because 27996263 - 2² = 27996259 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 (27996203) 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, 823403 + ... + 823436.

It is an arithmetic number, because the mean of its divisors is an integer number (7410780).

Almost surely, 2^27996263 is an apocalyptic number.

27996263 is a deficient number, since it is larger than the sum of its proper divisors (1646857).

27996263 is a wasteful number, since it uses less digits than its factorization.

27996263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646856.

The product of its digits is 244944, while the sum is 44.

The square root of 27996263 is about 5291.1494970375. The cubic root of 27996263 is about 303.6453873806.

The spelling of 27996263 in words is "twenty-seven million, nine hundred ninety-six thousand, two hundred sixty-three".