27838540 has 12 divisors (see below), whose sum is σ = 58460976. Its totient is φ = 11135408.

The previous prime is 27838507. The next prime is 27838583. The reversal of 27838540 is 4583872.

It is a self number, because there is not a number n which added to its sum of digits gives 27838540.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 695944 + ... + 695983.

It is an arithmetic number, because the mean of its divisors is an integer number (4871748).

Almost surely, 2^27838540 is an apocalyptic number.

27838540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27838540 is an abundant number, since it is smaller than the sum of its proper divisors (30622436).

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

27838540 is a wasteful number, since it uses less digits than its factorization.

27838540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391936 (or 1391934 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 27838540 is about 5276.2240286023. The cubic root of 27838540 is about 303.0740958911.

The spelling of 27838540 in words is "twenty-seven million, eight hundred thirty-eight thousand, five hundred forty".