27326421 has 6 divisors (see below), whose sum is σ = 39471510. Its totient is φ = 18217608.

The previous prime is 27326413. The next prime is 27326423. The reversal of 27326421 is 12462372.

It can be written as a sum of positive squares in only one way, i.e., 27185796 + 140625 = 5214^2 + 375^2 .

It is not a de Polignac number, because 27326421 - 2³ = 27326413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27326423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1518126 + ... + 1518143.

It is an arithmetic number, because the mean of its divisors is an integer number (6578585).

Almost surely, 2^27326421 is an apocalyptic number.

It is an amenable number.

27326421 is a deficient number, since it is larger than the sum of its proper divisors (12145089).

27326421 is a wasteful number, since it uses less digits than its factorization.

27326421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3036275 (or 3036272 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 27326421 is about 5227.4679339045. The cubic root of 27326421 is about 301.2041271266.

Adding to 27326421 its reverse (12462372), we get a palindrome (39788793).

The spelling of 27326421 in words is "twenty-seven million, three hundred twenty-six thousand, four hundred twenty-one".