27047172 has 72 divisors (see below), whose sum is σ = 68693184. Its totient is φ = 8264256.

The previous prime is 27047171. The next prime is 27047179. The reversal of 27047172 is 27174072.

It is not an unprimeable number, because it can be changed into a prime (27047171) 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 23 ways as a sum of consecutive naturals, for example, 510298 + ... + 510350.

It is an arithmetic number, because the mean of its divisors is an integer number (954072).

Almost surely, 2^27047172 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 27047172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34346592).

27047172 is an abundant number, since it is smaller than the sum of its proper divisors (41646012).

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

27047172 is a wasteful number, since it uses less digits than its factorization.

27047172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 27047172 is about 5200.6895696629. The cubic root of 27047172 is about 300.1746094632.

The spelling of 27047172 in words is "twenty-seven million, forty-seven thousand, one hundred seventy-two".