27878382 has 48 divisors (see below), whose sum is σ = 69774432. Its totient is φ = 7879680.

The previous prime is 27878359. The next prime is 27878423. The reversal of 27878382 is 28387872.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11082 + ... + 13362.

It is an arithmetic number, because the mean of its divisors is an integer number (1453634).

Almost surely, 2^27878382 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27878382, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34887216).

27878382 is an abundant number, since it is smaller than the sum of its proper divisors (41896050).

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

27878382 is a wasteful number, since it uses less digits than its factorization.

27878382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393 (or 2390 counting only the distinct ones).

The product of its digits is 301056, while the sum is 45.

The square root of 27878382 is about 5279.9982954543. The cubic root of 27878382 is about 303.2186116375.

The spelling of 27878382 in words is "twenty-seven million, eight hundred seventy-eight thousand, three hundred eighty-two".