27130013 has 4 divisors (see below), whose sum is σ = 27153948. Its totient is φ = 27106080.

The previous prime is 27130007. The next prime is 27130021. The reversal of 27130013 is 31003172.

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 7300804 + 19829209 = 2702^2 + 4453^2 .

It is a cyclic number.

It is not a de Polignac number, because 27130013 - 2¹⁴ = 27113629 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 27129973 and 27130000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27130063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10178 + ... + 12563.

It is an arithmetic number, because the mean of its divisors is an integer number (6788487).

Almost surely, 2^27130013 is an apocalyptic number.

It is an amenable number.

27130013 is a deficient number, since it is larger than the sum of its proper divisors (23935).

27130013 is a wasteful number, since it uses less digits than its factorization.

27130013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23934.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 27130013 is about 5208.6479051669. The cubic root of 27130013 is about 300.4807587880.

Adding to 27130013 its reverse (31003172), we get a palindrome (58133185).

The spelling of 27130013 in words is "twenty-seven million, one hundred thirty thousand, thirteen".