27481132 has 24 divisors (see below), whose sum is σ = 55107360. Its totient is φ = 11746560.

The previous prime is 27481127. The next prime is 27481141. The reversal of 27481132 is 23118472.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 27481132.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 11844 + ... + 13972.

It is an arithmetic number, because the mean of its divisors is an integer number (2296140).

Almost surely, 2^27481132 is an apocalyptic number.

It is an amenable number.

27481132 is an abundant number, since it is smaller than the sum of its proper divisors (27626228).

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

27481132 is a wasteful number, since it uses less digits than its factorization.

27481132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2601 (or 2599 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 27481132 is about 5242.2449389551. The cubic root of 27481132 is about 301.7714892006.

It can be divided in two parts, 274 and 81132, that added together give a triangular number (81406 = T₄₀₃).

The spelling of 27481132 in words is "twenty-seven million, four hundred eighty-one thousand, one hundred thirty-two".