27432745 has 8 divisors (see below), whose sum is σ = 33316416. Its totient is φ = 21681456.

The previous prime is 27432733. The next prime is 27432749. The reversal of 27432745 is 54723472.

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

It is a cyclic number.

It is not a de Polignac number, because 27432745 - 2⁷ = 27432617 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27432745.

It is not an unprimeable number, because it can be changed into a prime (27432749) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32637 + ... + 33466.

It is an arithmetic number, because the mean of its divisors is an integer number (4164552).

Almost surely, 2^27432745 is an apocalyptic number.

It is an amenable number.

27432745 is a deficient number, since it is larger than the sum of its proper divisors (5883671).

27432745 is an equidigital number, since it uses as much as digits as its factorization.

27432745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66191.

The product of its digits is 47040, while the sum is 34.

The square root of 27432745 is about 5237.6278027367. The cubic root of 27432745 is about 301.5942719082.

The spelling of 27432745 in words is "twenty-seven million, four hundred thirty-two thousand, seven hundred forty-five".