27976243 has 4 divisors (see below), whose sum is σ = 28098640. Its totient is φ = 27853848.

The previous prime is 27976241. The next prime is 27976261. The reversal of 27976243 is 34267972.

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 27976243 - 2¹ = 27976241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27976196 and 27976205.

It is not an unprimeable number, because it can be changed into a prime (27976241) 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, 60855 + ... + 61312.

It is an arithmetic number, because the mean of its divisors is an integer number (7024660).

Almost surely, 2^27976243 is an apocalyptic number.

27976243 is a deficient number, since it is larger than the sum of its proper divisors (122397).

27976243 is a wasteful number, since it uses less digits than its factorization.

27976243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122396.

The product of its digits is 127008, while the sum is 40.

The square root of 27976243 is about 5289.2573202672. The cubic root of 27976243 is about 303.5729916440.

The spelling of 27976243 in words is "twenty-seven million, nine hundred seventy-six thousand, two hundred forty-three".