27440145 has 12 divisors (see below), whose sum is σ = 47562996. Its totient is φ = 14634720.

The previous prime is 27440137. The next prime is 27440183. The reversal of 27440145 is 54104472.

It can be written as a sum of positive squares in 2 ways, for example, as 14197824 + 13242321 = 3768^2 + 3639^2 .

It is not a de Polignac number, because 27440145 - 2³ = 27440137 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304846 + ... + 304935.

It is an arithmetic number, because the mean of its divisors is an integer number (3963583).

Almost surely, 2^27440145 is an apocalyptic number.

It is an amenable number.

27440145 is a deficient number, since it is larger than the sum of its proper divisors (20122851).

27440145 is a wasteful number, since it uses less digits than its factorization.

27440145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609792 (or 609789 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 27440145 is about 5238.3341817795. The cubic root of 27440145 is about 301.6213878842.

The spelling of 27440145 in words is "twenty-seven million, four hundred forty thousand, one hundred forty-five".