27481738 has 4 divisors (see below), whose sum is σ = 41222610. Its totient is φ = 13740868.

The previous prime is 27481723. The next prime is 27481759. The reversal of 27481738 is 83718472.

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., 17952169 + 9529569 = 4237^2 + 3087^2 .

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 27481738.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6870433 + ... + 6870436.

Almost surely, 2^27481738 is an apocalyptic number.

27481738 is a deficient number, since it is larger than the sum of its proper divisors (13740872).

27481738 is a wasteful number, since it uses less digits than its factorization.

27481738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13740871.

The product of its digits is 75264, while the sum is 40.

The square root of 27481738 is about 5242.3027383012. The cubic root of 27481738 is about 301.7737073550.

The spelling of 27481738 in words is "twenty-seven million, four hundred eighty-one thousand, seven hundred thirty-eight".