27928144 has 20 divisors (see below), whose sum is σ = 57294324. Its totient is φ = 13142528.

The previous prime is 27928139. The next prime is 27928151. The reversal of 27928144 is 44182972.

It can be written as a sum of positive squares in 2 ways, for example, as 15054400 + 12873744 = 3880^2 + 3588^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51067 + ... + 51610.

Almost surely, 2^27928144 is an apocalyptic number.

It is an amenable number.

27928144 is an abundant number, since it is smaller than the sum of its proper divisors (29366180).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27928144 is a wasteful number, since it uses less digits than its factorization.

27928144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102702 (or 102696 counting only the distinct ones).

The product of its digits is 32256, while the sum is 37.

The square root of 27928144 is about 5284.7085066255. The cubic root of 27928144 is about 303.3989161688.

The spelling of 27928144 in words is "twenty-seven million, nine hundred twenty-eight thousand, one hundred forty-four".