27115840 has 28 divisors (see below), whose sum is σ = 64570356. Its totient is φ = 10846208.

The previous prime is 27115811. The next prime is 27115853. The reversal of 27115840 is 4851172.

It can be written as a sum of positive squares in 2 ways, for example, as 15116544 + 11999296 = 3888^2 + 3464^2 .

It is a junction number, because it is equal to n+sod(n) for n = 27115799 and 27115808.

It is a congruent number.

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, 42049 + ... + 42688.

Almost surely, 2^27115840 is an apocalyptic number.

27115840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27115840 is an abundant number, since it is smaller than the sum of its proper divisors (37454516).

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

27115840 is an equidigital number, since it uses as much as digits as its factorization.

27115840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84754 (or 84744 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 27115840 is about 5207.2872016051. The cubic root of 27115840 is about 300.4284249194.

The spelling of 27115840 in words is "twenty-seven million, one hundred fifteen thousand, eight hundred forty".