27384813 has 6 divisors (see below), whose sum is σ = 39555854. Its totient is φ = 18256536.

The previous prime is 27384779. The next prime is 27384817. The reversal of 27384813 is 31848372.

It can be written as a sum of positive squares in only one way, i.e., 20820969 + 6563844 = 4563^2 + 2562^2 .

It is not a de Polignac number, because 27384813 - 2⁸ = 27384557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27384817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1521370 + ... + 1521387.

Almost surely, 2^27384813 is an apocalyptic number.

It is an amenable number.

27384813 is a deficient number, since it is larger than the sum of its proper divisors (12171041).

27384813 is a wasteful number, since it uses less digits than its factorization.

27384813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3042763 (or 3042760 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 27384813 is about 5233.0500666437. The cubic root of 27384813 is about 301.4185154746.

The spelling of 27384813 in words is "twenty-seven million, three hundred eighty-four thousand, eight hundred thirteen".