27338638 has 4 divisors (see below), whose sum is σ = 41007960. Its totient is φ = 13669318.

The previous prime is 27338627. The next prime is 27338639. The reversal of 27338638 is 83683372.

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

It is a super-2 number, since 2×27338638² = 1494802255390088, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 27338638.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27338639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6834658 + ... + 6834661.

It is an arithmetic number, because the mean of its divisors is an integer number (10251990).

Almost surely, 2^27338638 is an apocalyptic number.

27338638 is a deficient number, since it is larger than the sum of its proper divisors (13669322).

27338638 is a wasteful number, since it uses less digits than its factorization.

27338638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13669321.

The product of its digits is 145152, while the sum is 40.

The square root of 27338638 is about 5228.6363422981. The cubic root of 27338638 is about 301.2490075322.

The spelling of 27338638 in words is "twenty-seven million, three hundred thirty-eight thousand, six hundred thirty-eight".