27070221 has 8 divisors (see below), whose sum is σ = 36173440. Its totient is φ = 18006912.

The previous prime is 27070217. The next prime is 27070229. The reversal of 27070221 is 12207072.

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

It is not a de Polignac number, because 27070221 - 2² = 27070217 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 (27070229) 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, 8356 + ... + 11133.

It is an arithmetic number, because the mean of its divisors is an integer number (4521680).

Almost surely, 2^27070221 is an apocalyptic number.

It is an amenable number.

27070221 is a deficient number, since it is larger than the sum of its proper divisors (9103219).

27070221 is a wasteful number, since it uses less digits than its factorization.

27070221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19955.

The product of its (nonzero) digits is 392, while the sum is 21.

The square root of 27070221 is about 5202.9050539098. The cubic root of 27070221 is about 300.2598526348.

Adding to 27070221 its reverse (12207072), we get a palindrome (39277293).

The spelling of 27070221 in words is "twenty-seven million, seventy thousand, two hundred twenty-one".