27305013 has 4 divisors (see below), whose sum is σ = 36406688. Its totient is φ = 18203340.

The previous prime is 27304999. The next prime is 27305027. The reversal of 27305013 is 31050372.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (27304999) and next prime (27305027).

It is not a de Polignac number, because 27305013 - 2⁸ = 27304757 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 (27305053) 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, 4550833 + ... + 4550838.

It is an arithmetic number, because the mean of its divisors is an integer number (9101672).

Almost surely, 2^27305013 is an apocalyptic number.

It is an amenable number.

27305013 is a deficient number, since it is larger than the sum of its proper divisors (9101675).

27305013 is an equidigital number, since it uses as much as digits as its factorization.

27305013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9101674.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 27305013 is about 5225.4198874349. The cubic root of 27305013 is about 301.1254503696.

Adding to 27305013 its reverse (31050372), we get a palindrome (58355385).

The spelling of 27305013 in words is "twenty-seven million, three hundred five thousand, thirteen".