27424221 has 8 divisors (see below), whose sum is σ = 39889824. Its totient is φ = 16620720.

The previous prime is 27424219. The next prime is 27424223. The reversal of 27424221 is 12242472.

It is an interprime number because it is at equal distance from previous prime (27424219) and next prime (27424223).

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

It is not a de Polignac number, because 27424221 - 2¹ = 27424219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 27424191 and 27424200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27424223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415486 + ... + 415551.

It is an arithmetic number, because the mean of its divisors is an integer number (4986228).

Almost surely, 2^27424221 is an apocalyptic number.

It is an amenable number.

27424221 is a deficient number, since it is larger than the sum of its proper divisors (12465603).

27424221 is a wasteful number, since it uses less digits than its factorization.

27424221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831051.

The product of its digits is 1792, while the sum is 24.

The square root of 27424221 is about 5236.8140123552. The cubic root of 27424221 is about 301.5630311910.

Adding to 27424221 its reverse (12242472), we get a palindrome (39666693).

The spelling of 27424221 in words is "twenty-seven million, four hundred twenty-four thousand, two hundred twenty-one".