27021056 has 36 divisors (see below), whose sum is σ = 54881400. Its totient is φ = 13274112.

The previous prime is 27021053. The next prime is 27021061. The reversal of 27021056 is 65012072.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27021053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14210 + ... + 15998.

Almost surely, 2^27021056 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 27021056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27440700).

27021056 is an abundant number, since it is smaller than the sum of its proper divisors (27860344).

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

27021056 is an equidigital number, since it uses as much as digits as its factorization.

27021056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 27021056 is about 5198.1781423880. The cubic root of 27021056 is about 300.0779649217.

The spelling of 27021056 in words is "twenty-seven million, twenty-one thousand, fifty-six".