27268821 has 12 divisors (see below), whose sum is σ = 39738348. Its totient is φ = 18017664.

The previous prime is 27268811. The next prime is 27268841. The reversal of 27268821 is 12886272.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8346321 + 18922500 = 2889^2 + 4350^2 .

It is not a de Polignac number, because 27268821 - 2⁷ = 27268693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27268811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12390 + ... + 14423.

It is an arithmetic number, because the mean of its divisors is an integer number (3311529).

Almost surely, 2^27268821 is an apocalyptic number.

It is an amenable number.

27268821 is a deficient number, since it is larger than the sum of its proper divisors (12469527).

27268821 is a wasteful number, since it uses less digits than its factorization.

27268821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26932 (or 26929 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 27268821 is about 5221.9556681381. The cubic root of 27268821 is about 300.9923472041.

The spelling of 27268821 in words is "twenty-seven million, two hundred sixty-eight thousand, eight hundred twenty-one".