27641856 has 96 divisors (see below), whose sum is σ = 80589600. Its totient is φ = 8355840.

The previous prime is 27641851. The next prime is 27641869. The reversal of 27641856 is 65814672.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (27641851) 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, 67380 + ... + 67788.

It is an arithmetic number, because the mean of its divisors is an integer number (839475).

Almost surely, 2^27641856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27641856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40294800).

27641856 is an abundant number, since it is smaller than the sum of its proper divisors (52947744).

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

27641856 is a wasteful number, since it uses less digits than its factorization.

27641856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445 (or 425 counting only the distinct ones).

The product of its digits is 80640, while the sum is 39.

The square root of 27641856 is about 5257.5522821937. The cubic root of 27641856 is about 302.3586517190.

The spelling of 27641856 in words is "twenty-seven million, six hundred forty-one thousand, eight hundred fifty-six".