27861128 has 16 divisors (see below), whose sum is σ = 52309260. Its totient is φ = 13912000.

The previous prime is 27861103. The next prime is 27861139. The reversal of 27861128 is 82116872.

It can be written as a sum of positive squares in 2 ways, for example, as 27857284 + 3844 = 5278^2 + 62^2 .

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, 5678 + ... + 9378.

Almost surely, 2^27861128 is an apocalyptic number.

It is an amenable number.

27861128 is a deficient number, since it is larger than the sum of its proper divisors (24448132).

27861128 is a wasteful number, since it uses less digits than its factorization.

27861128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648 (or 4644 counting only the distinct ones).

The product of its digits is 10752, while the sum is 35.

The square root of 27861128 is about 5278.3641405269. The cubic root of 27861128 is about 303.1560444770.

The spelling of 27861128 in words is "twenty-seven million, eight hundred sixty-one thousand, one hundred twenty-eight".