27945165 has 8 divisors (see below), whose sum is σ = 44712288. Its totient is φ = 14904080.

The previous prime is 27945121. The next prime is 27945179. The reversal of 27945165 is 56154972.

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

It is not a de Polignac number, because 27945165 - 2⁷ = 27945037 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 931491 + ... + 931520.

It is an arithmetic number, because the mean of its divisors is an integer number (5589036).

Almost surely, 2^27945165 is an apocalyptic number.

It is an amenable number.

27945165 is a deficient number, since it is larger than the sum of its proper divisors (16767123).

27945165 is a wasteful number, since it uses less digits than its factorization.

27945165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1863019.

The product of its digits is 75600, while the sum is 39.

The square root of 27945165 is about 5286.3186623585. The cubic root of 27945165 is about 303.4605398389.

The spelling of 27945165 in words is "twenty-seven million, nine hundred forty-five thousand, one hundred sixty-five".