27438912 has 140 divisors (see below), whose sum is σ = 83596480. Its totient is φ = 8895744.

The previous prime is 27438911. The next prime is 27438923. The reversal of 27438912 is 21983472.

27438912 is a `hidden beast` number, since 274 + 389 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27438911) by changing a digit.

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 in 19 ways as a sum of consecutive naturals, for example, 347289 + ... + 347367.

Almost surely, 2^27438912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27438912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41798240).

27438912 is an abundant number, since it is smaller than the sum of its proper divisors (56157568).

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

27438912 is an equidigital number, since it uses as much as digits as its factorization.

27438912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170 (or 151 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 27438912 is about 5238.2164903715. The cubic root of 27438912 is about 301.6168701148.

The spelling of 27438912 in words is "twenty-seven million, four hundred thirty-eight thousand, nine hundred twelve".