27728241 has 16 divisors (see below), whose sum is σ = 39406464. Its totient is φ = 17282304.

The previous prime is 27728231. The next prime is 27728287. The reversal of 27728241 is 14282772.

It is not a de Polignac number, because 27728241 - 2⁵ = 27728209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27728231) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6276 + ... + 9738.

It is an arithmetic number, because the mean of its divisors is an integer number (2462904).

Almost surely, 2^27728241 is an apocalyptic number.

It is an amenable number.

27728241 is a deficient number, since it is larger than the sum of its proper divisors (11678223).

27728241 is a wasteful number, since it uses less digits than its factorization.

27728241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640.

The product of its digits is 12544, while the sum is 33.

The square root of 27728241 is about 5265.7611985353. The cubic root of 27728241 is about 302.6732964181.

The spelling of 27728241 in words is "twenty-seven million, seven hundred twenty-eight thousand, two hundred forty-one".