27440345 has 8 divisors (see below), whose sum is σ = 32964360. Its totient is φ = 21928320.

The previous prime is 27440341. The next prime is 27440353. The reversal of 27440345 is 54304472.

It can be written as a sum of positive squares in 4 ways, for example, as 2808976 + 24631369 = 1676^2 + 4963^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27440345 - 2² = 27440341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27440341) 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 7 ways as a sum of consecutive naturals, for example, 3215 + ... + 8075.

It is an arithmetic number, because the mean of its divisors is an integer number (4120545).

Almost surely, 2^27440345 is an apocalyptic number.

It is an amenable number.

27440345 is a deficient number, since it is larger than the sum of its proper divisors (5524015).

27440345 is a wasteful number, since it uses less digits than its factorization.

27440345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5995.

The product of its (nonzero) digits is 13440, while the sum is 29.

The square root of 27440345 is about 5238.3532717830. The cubic root of 27440345 is about 301.6221206807.

The spelling of 27440345 in words is "twenty-seven million, four hundred forty thousand, three hundred forty-five".