27044021 has 8 divisors (see below), whose sum is σ = 28283904. Its totient is φ = 25809520.

The previous prime is 27044009. The next prime is 27044023. The reversal of 27044021 is 12044072.

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 27044021 - 2¹⁰ = 27042997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27043984 and 27044002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27044023) 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, 11756 + ... + 13866.

It is an arithmetic number, because the mean of its divisors is an integer number (3535488).

Almost surely, 2^27044021 is an apocalyptic number.

It is an amenable number.

27044021 is a deficient number, since it is larger than the sum of its proper divisors (1239883).

27044021 is a wasteful number, since it uses less digits than its factorization.

27044021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691.

The product of its (nonzero) digits is 448, while the sum is 20.

The square root of 27044021 is about 5200.3866202428. The cubic root of 27044021 is about 300.1629522133.

Adding to 27044021 its reverse (12044072), we get a palindrome (39088093).

The spelling of 27044021 in words is "twenty-seven million, forty-four thousand, twenty-one".