27087640 has 32 divisors (see below), whose sum is σ = 61404480. Its totient is φ = 10753792.

The previous prime is 27087623. The next prime is 27087649. The reversal of 27087640 is 4678072.

It is a junction number, because it is equal to n+sod(n) for n = 27087596 and 27087605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27087649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3009 + ... + 7951.

It is an arithmetic number, because the mean of its divisors is an integer number (1918890).

Almost surely, 2^27087640 is an apocalyptic number.

27087640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27087640 is an abundant number, since it is smaller than the sum of its proper divisors (34316840).

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

27087640 is a wasteful number, since it uses less digits than its factorization.

27087640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091 (or 5087 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 27087640 is about 5204.5787533671. The cubic root of 27087640 is about 300.3242420234.

The spelling of 27087640 in words is "twenty-seven million, eighty-seven thousand, six hundred forty".