27728318 has 16 divisors (see below), whose sum is σ = 42874944. Its totient is φ = 13439520.

The previous prime is 27728303. The next prime is 27728333. The reversal of 27728318 is 81382772.

It is an interprime number because it is at equal distance from previous prime (27728303) and next prime (27728333).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26648 + ... + 27668.

It is an arithmetic number, because the mean of its divisors is an integer number (2679684).

Almost surely, 2^27728318 is an apocalyptic number.

27728318 is a deficient number, since it is larger than the sum of its proper divisors (15146626).

27728318 is a wasteful number, since it uses less digits than its factorization.

27728318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1427.

The product of its digits is 37632, while the sum is 38.

The square root of 27728318 is about 5265.7685099138. The cubic root of 27728318 is about 302.6735765876.

The spelling of 27728318 in words is "twenty-seven million, seven hundred twenty-eight thousand, three hundred eighteen".