27284945 has 16 divisors (see below), whose sum is σ = 33488640. Its totient is φ = 21336000.

The previous prime is 27284927. The next prime is 27284951. The reversal of 27284945 is 54948272.

It is a de Polignac number, because none of the positive numbers 2^k-27284945 is a prime.

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, 53351 + ... + 53859.

It is an arithmetic number, because the mean of its divisors is an integer number (2093040).

Almost surely, 2^27284945 is an apocalyptic number.

It is an amenable number.

27284945 is a deficient number, since it is larger than the sum of its proper divisors (6203695).

27284945 is a wasteful number, since it uses less digits than its factorization.

27284945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736.

The product of its digits is 161280, while the sum is 41.

The square root of 27284945 is about 5223.4993060208. The cubic root of 27284945 is about 301.0516609084.

The spelling of 27284945 in words is "twenty-seven million, two hundred eighty-four thousand, nine hundred forty-five".