27221764 has 6 divisors (see below), whose sum is σ = 47638094. Its totient is φ = 13610880.

The previous prime is 27221717. The next prime is 27221797. The reversal of 27221764 is 46712272.

It can be written as a sum of positive squares in only one way, i.e., 25583364 + 1638400 = 5058^2 + 1280^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3402717 + ... + 3402724.

Almost surely, 2^27221764 is an apocalyptic number.

It is an amenable number.

27221764 is a deficient number, since it is larger than the sum of its proper divisors (20416330).

27221764 is a wasteful number, since it uses less digits than its factorization.

27221764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6805445 (or 6805443 counting only the distinct ones).

The product of its digits is 9408, while the sum is 31.

The square root of 27221764 is about 5217.4480351988. The cubic root of 27221764 is about 300.8191096440.

The spelling of 27221764 in words is "twenty-seven million, two hundred twenty-one thousand, seven hundred sixty-four".