27680756 has 6 divisors (see below), whose sum is σ = 48441330. Its totient is φ = 13840376.

The previous prime is 27680747. The next prime is 27680759. The reversal of 27680756 is 65708672.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 25664356 + 2016400 = 5066^2 + 1420^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27680759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460091 + ... + 3460098.

It is an arithmetic number, because the mean of its divisors is an integer number (8073555).

Almost surely, 2^27680756 is an apocalyptic number.

It is an amenable number.

27680756 is a deficient number, since it is larger than the sum of its proper divisors (20760574).

27680756 is a wasteful number, since it uses less digits than its factorization.

27680756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6920193 (or 6920191 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 27680756 is about 5261.2504217154. The cubic root of 27680756 is about 302.5004202804.

The spelling of 27680756 in words is "twenty-seven million, six hundred eighty thousand, seven hundred fifty-six".