27142813 has 4 divisors (see below), whose sum is σ = 27239008. Its totient is φ = 27046620.

The previous prime is 27142799. The next prime is 27142823. The reversal of 27142813 is 31824172.

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 a cyclic number.

It is not a de Polignac number, because 27142813 - 2¹³ = 27134621 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 (27142823) 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, 47673 + ... + 48238.

It is an arithmetic number, because the mean of its divisors is an integer number (6809752).

Almost surely, 2^27142813 is an apocalyptic number.

It is an amenable number.

27142813 is a deficient number, since it is larger than the sum of its proper divisors (96195).

27142813 is an equidigital number, since it uses as much as digits as its factorization.

27142813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96194.

The product of its digits is 2688, while the sum is 28.

The square root of 27142813 is about 5209.8764860599. The cubic root of 27142813 is about 300.5280071865.

Adding to 27142813 its reverse (31824172), we get a palindrome (58966985).

It can be divided in two parts, 271428 and 13, that added together give a square (271441 = 521²).

The spelling of 27142813 in words is "twenty-seven million, one hundred forty-two thousand, eight hundred thirteen".