27755428 has 24 divisors (see below), whose sum is σ = 51448320. Its totient is φ = 13065120.

The previous prime is 27755423. The next prime is 27755459. The reversal of 27755428 is 82455772.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (27755423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12093 + ... + 14203.

It is an arithmetic number, because the mean of its divisors is an integer number (2143680).

Almost surely, 2^27755428 is an apocalyptic number.

It is an amenable number.

27755428 is a deficient number, since it is larger than the sum of its proper divisors (23692892).

27755428 is a wasteful number, since it uses less digits than its factorization.

27755428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307 (or 2305 counting only the distinct ones).

The product of its digits is 156800, while the sum is 40.

The square root of 27755428 is about 5268.3420541950. The cubic root of 27755428 is about 302.7721858619.

The spelling of 27755428 in words is "twenty-seven million, seven hundred fifty-five thousand, four hundred twenty-eight".