27880928 has 24 divisors (see below), whose sum is σ = 55009080. Its totient is φ = 13910400.

The previous prime is 27880927. The next prime is 27880933. The reversal of 27880928 is 82908872.

It is a super-2 number, since 2×27880928² = 1554692292282368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27880927) 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 3 ways as a sum of consecutive naturals, for example, 26003 + ... + 27053.

It is an arithmetic number, because the mean of its divisors is an integer number (2292045).

Almost surely, 2^27880928 is an apocalyptic number.

It is an amenable number.

27880928 is a deficient number, since it is larger than the sum of its proper divisors (27128152).

27880928 is a wasteful number, since it uses less digits than its factorization.

27880928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1890 (or 1882 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 27880928 is about 5280.2393885126. The cubic root of 27880928 is about 303.2278418610.

The spelling of 27880928 in words is "twenty-seven million, eight hundred eighty thousand, nine hundred twenty-eight".