27727856 has 40 divisors (see below), whose sum is σ = 58433760. Its totient is φ = 12669696.

The previous prime is 27727831. The next prime is 27727871. The reversal of 27727856 is 65872772.

It is a happy number.

It is a congruent number.

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, 22061 + ... + 23283.

It is an arithmetic number, because the mean of its divisors is an integer number (1460844).

Almost surely, 2^27727856 is an apocalyptic number.

27727856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27727856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29216880).

27727856 is an abundant number, since it is smaller than the sum of its proper divisors (30705904).

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

27727856 is a wasteful number, since it uses less digits than its factorization.

27727856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353 (or 1347 counting only the distinct ones).

The product of its digits is 329280, while the sum is 44.

The square root of 27727856 is about 5265.7246414905. The cubic root of 27727856 is about 302.6718955628.

The spelling of 27727856 in words is "twenty-seven million, seven hundred twenty-seven thousand, eight hundred fifty-six".