27720338 has 4 divisors (see below), whose sum is σ = 41580510. Its totient is φ = 13860168.

The previous prime is 27720323. The next prime is 27720347. The reversal of 27720338 is 83302772.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15976009 + 11744329 = 3997^2 + 3427^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6930083 + ... + 6930086.

Almost surely, 2^27720338 is an apocalyptic number.

27720338 is a deficient number, since it is larger than the sum of its proper divisors (13860172).

27720338 is a wasteful number, since it uses less digits than its factorization.

27720338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13860171.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 27720338 is about 5265.0107312331. The cubic root of 27720338 is about 302.6445380804.

The spelling of 27720338 in words is "twenty-seven million, seven hundred twenty thousand, three hundred thirty-eight".