27308345 has 4 divisors (see below), whose sum is σ = 32770020. Its totient is φ = 21846672.

The previous prime is 27308261. The next prime is 27308381. The reversal of 27308345 is 54380372.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21752896 + 5555449 = 4664^2 + 2357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27308345 is a prime.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2730830 + ... + 2730839.

It is an arithmetic number, because the mean of its divisors is an integer number (8192505).

Almost surely, 2^27308345 is an apocalyptic number.

It is an amenable number.

27308345 is a deficient number, since it is larger than the sum of its proper divisors (5461675).

27308345 is an equidigital number, since it uses as much as digits as its factorization.

27308345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5461674.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 27308345 is about 5225.7387037624. The cubic root of 27308345 is about 301.1376985379.

The spelling of 27308345 in words is "twenty-seven million, three hundred eight thousand, three hundred forty-five".