27889340 has 48 divisors (see below), whose sum is σ = 64350720. Its totient is φ = 10105920.

The previous prime is 27889319. The next prime is 27889349. The reversal of 27889340 is 4398872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27889349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7145 + ... + 10335.

It is an arithmetic number, because the mean of its divisors is an integer number (1340640).

Almost surely, 2^27889340 is an apocalyptic number.

27889340 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 27889340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32175360).

27889340 is an abundant number, since it is smaller than the sum of its proper divisors (36461380).

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

27889340 is a wasteful number, since it uses less digits than its factorization.

27889340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3242 (or 3240 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 27889340 is about 5281.0358832335. The cubic root of 27889340 is about 303.2583345825.

The spelling of 27889340 in words is "twenty-seven million, eight hundred eighty-nine thousand, three hundred forty".