27920339 has 4 divisors (see below), whose sum is σ = 28196880. Its totient is φ = 27643800.

The previous prime is 27920309. The next prime is 27920377. The reversal of 27920339 is 93302972.

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 27920339 - 2¹² = 27916243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27920299 and 27920308.

It is not an unprimeable number, because it can be changed into a prime (27920309) 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, 138119 + ... + 138320.

It is an arithmetic number, because the mean of its divisors is an integer number (7049220).

Almost surely, 2^27920339 is an apocalyptic number.

27920339 is a deficient number, since it is larger than the sum of its proper divisors (276541).

27920339 is a wasteful number, since it uses less digits than its factorization.

27920339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276540.

The product of its (nonzero) digits is 20412, while the sum is 35.

The square root of 27920339 is about 5283.9700036999. The cubic root of 27920339 is about 303.3706501877.

The spelling of 27920339 in words is "twenty-seven million, nine hundred twenty thousand, three hundred thirty-nine".