27342645 has 16 divisors (see below), whose sum is σ = 47725632. Its totient is φ = 13256960.

The previous prime is 27342643. The next prime is 27342671. The reversal of 27342645 is 54624372.

It is not a de Polignac number, because 27342645 - 2¹ = 27342643 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27342641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82692 + ... + 83021.

It is an arithmetic number, because the mean of its divisors is an integer number (2982852).

Almost surely, 2^27342645 is an apocalyptic number.

It is an amenable number.

27342645 is a deficient number, since it is larger than the sum of its proper divisors (20382987).

27342645 is a wasteful number, since it uses less digits than its factorization.

27342645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165732.

The product of its digits is 40320, while the sum is 33.

The square root of 27342645 is about 5229.0195065614. The cubic root of 27342645 is about 301.2637247467.

The spelling of 27342645 in words is "twenty-seven million, three hundred forty-two thousand, six hundred forty-five".