27138726 has 48 divisors (see below), whose sum is σ = 64209600. Its totient is φ = 8567208.

The previous prime is 27138721. The next prime is 27138737. The reversal of 27138726 is 62783172.

27138726 is a `hidden beast` number, since 271 + 387 + 2 + 6 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27138721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7765 + ... + 10703.

It is an arithmetic number, because the mean of its divisors is an integer number (1337700).

Almost surely, 2^27138726 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27138726, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32104800).

27138726 is an abundant number, since it is smaller than the sum of its proper divisors (37070874).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27138726 is a wasteful number, since it uses less digits than its factorization.

27138726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2975 (or 2963 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 27138726 is about 5209.4842355074. The cubic root of 27138726 is about 300.5129225351.

The spelling of 27138726 in words is "twenty-seven million, one hundred thirty-eight thousand, seven hundred twenty-six".