27921364 has 6 divisors (see below), whose sum is σ = 48862394. Its totient is φ = 13960680.

The previous prime is 27921281. The next prime is 27921367. The reversal of 27921364 is 46312972.

It can be written as a sum of positive squares in only one way, i.e., 26728900 + 1192464 = 5170^2 + 1092^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27921367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3490167 + ... + 3490174.

Almost surely, 2^27921364 is an apocalyptic number.

It is an amenable number.

27921364 is a deficient number, since it is larger than the sum of its proper divisors (20941030).

27921364 is a wasteful number, since it uses less digits than its factorization.

27921364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6980345 (or 6980343 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 27921364 is about 5284.0669942763. The cubic root of 27921364 is about 303.3743625484.

The spelling of 27921364 in words is "twenty-seven million, nine hundred twenty-one thousand, three hundred sixty-four".