27861338 has 4 divisors (see below), whose sum is σ = 41792010. Its totient is φ = 13930668.

The previous prime is 27861313. The next prime is 27861367. The reversal of 27861338 is 83316872.

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., 23396569 + 4464769 = 4837^2 + 2113^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6965333 + ... + 6965336.

Almost surely, 2^27861338 is an apocalyptic number.

27861338 is a deficient number, since it is larger than the sum of its proper divisors (13930672).

27861338 is a wasteful number, since it uses less digits than its factorization.

27861338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13930671.

The product of its digits is 48384, while the sum is 38.

The square root of 27861338 is about 5278.3840330162. The cubic root of 27861338 is about 303.1568061428.

It can be divided in two parts, 278 and 61338, that added together give a palindrome (61616).

The spelling of 27861338 in words is "twenty-seven million, eight hundred sixty-one thousand, three hundred thirty-eight".