27855940 has 24 divisors (see below), whose sum is σ = 66854592. Its totient is φ = 9550560.

The previous prime is 27855929. The next prime is 27855983. The reversal of 27855940 is 4955872.

It is a junction number, because it is equal to n+sod(n) for n = 27855893 and 27855902.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99346 + ... + 99625.

It is an arithmetic number, because the mean of its divisors is an integer number (2785608).

Almost surely, 2^27855940 is an apocalyptic number.

27855940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27855940 is an abundant number, since it is smaller than the sum of its proper divisors (38998652).

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

27855940 is a wasteful number, since it uses less digits than its factorization.

27855940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198987 (or 198985 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 27855940 is about 5277.8726775094. The cubic root of 27855940 is about 303.1372264881.

The spelling of 27855940 in words is "twenty-seven million, eight hundred fifty-five thousand, nine hundred forty".