27313621 has 12 divisors (see below), whose sum is σ = 29832300. Its totient is φ = 24974208.

The previous prime is 27313619. The next prime is 27313633. The reversal of 27313621 is 12631372.

It can be written as a sum of positive squares in 2 ways, for example, as 13727025 + 13586596 = 3705^2 + 3686^2 .

It is not a de Polignac number, because 27313621 - 2¹ = 27313619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27313661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9165 + ... + 11773.

It is an arithmetic number, because the mean of its divisors is an integer number (2486025).

Almost surely, 2^27313621 is an apocalyptic number.

It is an amenable number.

27313621 is a deficient number, since it is larger than the sum of its proper divisors (2518679).

27313621 is a wasteful number, since it uses less digits than its factorization.

27313621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2676 (or 2657 counting only the distinct ones).

The product of its digits is 1512, while the sum is 25.

The square root of 27313621 is about 5226.2434883958. The cubic root of 27313621 is about 301.1570906589.

Adding to 27313621 its reverse (12631372), we get a palindrome (39944993).

The spelling of 27313621 in words is "twenty-seven million, three hundred thirteen thousand, six hundred twenty-one".