27903045 has 16 divisors (see below), whose sum is σ = 44735040. Its totient is φ = 14851584.

The previous prime is 27902993. The next prime is 27903053. The reversal of 27903045 is 54030972.

It is not a de Polignac number, because 27903045 - 2²³ = 19514437 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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7221 + ... + 10389.

It is an arithmetic number, because the mean of its divisors is an integer number (2795940).

Almost surely, 2^27903045 is an apocalyptic number.

It is an amenable number.

27903045 is a deficient number, since it is larger than the sum of its proper divisors (16831995).

27903045 is a wasteful number, since it uses less digits than its factorization.

27903045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3764.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 27903045 is about 5282.3332912644. Note that the first 3 decimals coincide. The cubic root of 27903045 is about 303.3080008095.

The spelling of 27903045 in words is "twenty-seven million, nine hundred three thousand, forty-five".