27775928 has 16 divisors (see below), whose sum is σ = 52462080. Its totient is φ = 13786048.

The previous prime is 27775903. The next prime is 27775931. The reversal of 27775928 is 82957772.

It is a super-2 number, since 2×27775928² = 1543004352522368, which contains 22 as substring.

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, 11576 + ... + 13767.

It is an arithmetic number, because the mean of its divisors is an integer number (3278880).

Almost surely, 2^27775928 is an apocalyptic number.

It is an amenable number.

27775928 is a deficient number, since it is larger than the sum of its proper divisors (24686152).

27775928 is a wasteful number, since it uses less digits than its factorization.

27775928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25486 (or 25482 counting only the distinct ones).

The product of its digits is 493920, while the sum is 47.

The square root of 27775928 is about 5270.2872786974. The cubic root of 27775928 is about 302.8467094509.

The spelling of 27775928 in words is "twenty-seven million, seven hundred seventy-five thousand, nine hundred twenty-eight".