27144321 has 16 divisors (see below), whose sum is σ = 37359360. Its totient is φ = 17521920.

The previous prime is 27144289. The next prime is 27144323. The reversal of 27144321 is 12344172.

It is a happy number.

It is not a de Polignac number, because 27144321 - 2⁵ = 27144289 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27144291 and 27144300.

It is not an unprimeable number, because it can be changed into a prime (27144323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11481 + ... + 13641.

It is an arithmetic number, because the mean of its divisors is an integer number (2334960).

Almost surely, 2^27144321 is an apocalyptic number.

It is an amenable number.

27144321 is a deficient number, since it is larger than the sum of its proper divisors (10215039).

27144321 is a wasteful number, since it uses less digits than its factorization.

27144321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2296.

The product of its digits is 1344, while the sum is 24.

The square root of 27144321 is about 5210.0212091699. The cubic root of 27144321 is about 300.5335726603.

Adding to 27144321 its reverse (12344172), we get a palindrome (39488493).

The spelling of 27144321 in words is "twenty-seven million, one hundred forty-four thousand, three hundred twenty-one".