27927740 has 12 divisors (see below), whose sum is σ = 58648296. Its totient is φ = 11171088.

The previous prime is 27927721. The next prime is 27927743. The reversal of 27927740 is 4772972.

27927740 = 816² + 817² + ... + 855².

It is a junction number, because it is equal to n+sod(n) for n = 27927694 and 27927703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27927743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698174 + ... + 698213.

It is an arithmetic number, because the mean of its divisors is an integer number (4887358).

Almost surely, 2^27927740 is an apocalyptic number.

27927740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27927740 is an abundant number, since it is smaller than the sum of its proper divisors (30720556).

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

27927740 is a wasteful number, since it uses less digits than its factorization.

27927740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396396 (or 1396394 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 27927740 is about 5284.6702829978. The cubic root of 27927740 is about 303.3974532030.

The spelling of 27927740 in words is "twenty-seven million, nine hundred twenty-seven thousand, seven hundred forty".