27885540 has 96 divisors (see below), whose sum is σ = 83744640. Its totient is φ = 6912000.

The previous prime is 27885527. The next prime is 27885541. The reversal of 27885540 is 4558872.

It is not an unprimeable number, because it can be changed into a prime (27885541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69340 + ... + 69740.

It is an arithmetic number, because the mean of its divisors is an integer number (872340).

Almost surely, 2^27885540 is an apocalyptic number.

27885540 is a gapful number since it is divisible by the number (20) 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 27885540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41872320).

27885540 is an abundant number, since it is smaller than the sum of its proper divisors (55859100).

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

27885540 is a wasteful number, since it uses less digits than its factorization.

27885540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 491 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 27885540 is about 5280.6760930775. The cubic root of 27885540 is about 303.2445606936.

The spelling of 27885540 in words is "twenty-seven million, eight hundred eighty-five thousand, five hundred forty".