27840438 has 24 divisors (see below), whose sum is σ = 60465600. Its totient is φ = 9257904.

The previous prime is 27840433. The next prime is 27840451. The reversal of 27840438 is 83404872.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27840433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7008 + ... + 10236.

It is an arithmetic number, because the mean of its divisors is an integer number (2519400).

Almost surely, 2^27840438 is an apocalyptic number.

27840438 is an abundant number, since it is smaller than the sum of its proper divisors (32625162).

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

27840438 is a wasteful number, since it uses less digits than its factorization.

27840438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3716 (or 3713 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 27840438 is about 5276.4038890138. The cubic root of 27840438 is about 303.0809834837.

The spelling of 27840438 in words is "twenty-seven million, eight hundred forty thousand, four hundred thirty-eight".