27823145 has 24 divisors (see below), whose sum is σ = 39028416. Its totient is φ = 18652608.

The previous prime is 27823141. The next prime is 27823153. The reversal of 27823145 is 54132872.

It is not a de Polignac number, because 27823145 - 2² = 27823141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27823141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 98174 + ... + 98456.

It is an arithmetic number, because the mean of its divisors is an integer number (1626184).

Almost surely, 2^27823145 is an apocalyptic number.

It is an amenable number.

27823145 is a deficient number, since it is larger than the sum of its proper divisors (11205271).

27823145 is an equidigital number, since it uses as much as digits as its factorization.

27823145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 401 (or 348 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 27823145 is about 5274.7649236720. The cubic root of 27823145 is about 303.0182178882.

The spelling of 27823145 in words is "twenty-seven million, eight hundred twenty-three thousand, one hundred forty-five".