27641231 has 8 divisors (see below), whose sum is σ = 28380480. Its totient is φ = 26911872.

The previous prime is 27641227. The next prime is 27641261. The reversal of 27641231 is 13214672.

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

It is a cyclic number.

It is not a de Polignac number, because 27641231 - 2² = 27641227 is a prime.

It is a super-2 number, since 2×27641231² = 1528075302390722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27641231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27641221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3371 + ... + 8163.

It is an arithmetic number, because the mean of its divisors is an integer number (3547560).

Almost surely, 2^27641231 is an apocalyptic number.

27641231 is a deficient number, since it is larger than the sum of its proper divisors (739249).

27641231 is an equidigital number, since it uses as much as digits as its factorization.

27641231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4945.

The product of its digits is 2016, while the sum is 26.

The square root of 27641231 is about 5257.4928435520. The cubic root of 27641231 is about 302.3563728611.

It can be divided in two parts, 27641 and 231, that added together give a palindrome (27872).

The spelling of 27641231 in words is "twenty-seven million, six hundred forty-one thousand, two hundred thirty-one".