27144421 has 8 divisors (see below), whose sum is σ = 27968000. Its totient is φ = 26325648.

The previous prime is 27144413. The next prime is 27144443. The reversal of 27144421 is 12444172.

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

It is not a de Polignac number, because 27144421 - 2³ = 27144413 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 (27144721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12580 + ... + 14578.

It is an arithmetic number, because the mean of its divisors is an integer number (3496000).

Almost surely, 2^27144421 is an apocalyptic number.

It is an amenable number.

27144421 is a deficient number, since it is larger than the sum of its proper divisors (823579).

27144421 is a wasteful number, since it uses less digits than its factorization.

27144421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2403.

The product of its digits is 1792, while the sum is 25.

The square root of 27144421 is about 5210.0308060510. The cubic root of 27144421 is about 300.5339417163.

Adding to 27144421 its reverse (12444172), we get a palindrome (39588593).

The spelling of 27144421 in words is "twenty-seven million, one hundred forty-four thousand, four hundred twenty-one".