27135813 has 8 divisors (see below), whose sum is σ = 36340000. Its totient is φ = 18011088.

The previous prime is 27135803. The next prime is 27135817. The reversal of 27135813 is 31853172.

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

It is not a de Polignac number, because 27135813 - 2⁶ = 27135749 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 (27135817) 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, 19063 + ... + 20436.

It is an arithmetic number, because the mean of its divisors is an integer number (4542500).

Almost surely, 2^27135813 is an apocalyptic number.

It is an amenable number.

27135813 is a deficient number, since it is larger than the sum of its proper divisors (9204187).

27135813 is a wasteful number, since it uses less digits than its factorization.

27135813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39731.

The product of its digits is 5040, while the sum is 30.

The square root of 27135813 is about 5209.2046417855. The cubic root of 27135813 is about 300.5021700595.

Adding to 27135813 its reverse (31853172), we get a palindrome (58988985).

The spelling of 27135813 in words is "twenty-seven million, one hundred thirty-five thousand, eight hundred thirteen".