27845013 has 24 divisors (see below), whose sum is σ = 44793408. Its totient is φ = 15069888.

The previous prime is 27845011. The next prime is 27845021. The reversal of 27845013 is 31054872.

It is not a de Polignac number, because 27845013 - 2¹ = 27845011 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27845011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5745 + ... + 9417.

It is an arithmetic number, because the mean of its divisors is an integer number (1866392).

Almost surely, 2^27845013 is an apocalyptic number.

It is an amenable number.

27845013 is a deficient number, since it is larger than the sum of its proper divisors (16948395).

27845013 is a wasteful number, since it uses less digits than its factorization.

27845013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3721 (or 3702 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 27845013 is about 5276.8374051130. The cubic root of 27845013 is about 303.0975842708.

Adding to 27845013 its reverse (31054872), we get a palindrome (58899885).

The spelling of 27845013 in words is "twenty-seven million, eight hundred forty-five thousand, thirteen".