27673221 has 16 divisors (see below), whose sum is σ = 38404800. Its totient is φ = 17703168.

The previous prime is 27673207. The next prime is 27673231. The reversal of 27673221 is 12237672.

It is not a de Polignac number, because 27673221 - 2⁵ = 27673189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27673231) 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, 14685 + ... + 16461.

It is an arithmetic number, because the mean of its divisors is an integer number (2400300).

Almost surely, 2^27673221 is an apocalyptic number.

It is an amenable number.

27673221 is a deficient number, since it is larger than the sum of its proper divisors (10731579).

27673221 is a wasteful number, since it uses less digits than its factorization.

27673221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988.

The product of its digits is 7056, while the sum is 30.

The square root of 27673221 is about 5260.5342884540. The cubic root of 27673221 is about 302.4729698317.

The spelling of 27673221 in words is "twenty-seven million, six hundred seventy-three thousand, two hundred twenty-one".