27432138 has 8 divisors (see below), whose sum is σ = 54864288. Its totient is φ = 9144044.

The previous prime is 27432131. The next prime is 27432187. The reversal of 27432138 is 83123472.

It is a sphenic number, since it is the product of 3 distinct primes.

27432138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (27432131) 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 3 ways as a sum of consecutive naturals, for example, 2286006 + ... + 2286017.

It is an arithmetic number, because the mean of its divisors is an integer number (6858036).

Almost surely, 2^27432138 is an apocalyptic number.

27432138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

27432138 is a wasteful number, since it uses less digits than its factorization.

27432138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4572028.

The product of its digits is 8064, while the sum is 30.

The square root of 27432138 is about 5237.5698563360. The cubic root of 27432138 is about 301.5920474489.

The spelling of 27432138 in words is "twenty-seven million, four hundred thirty-two thousand, one hundred thirty-eight".