27768660 has 48 divisors (see below), whose sum is σ = 80438400. Its totient is φ = 7149184.

The previous prime is 27768641. The next prime is 27768673. The reversal of 27768660 is 6686772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6240 + ... + 9719.

It is an arithmetic number, because the mean of its divisors is an integer number (1675800).

Almost surely, 2^27768660 is an apocalyptic number.

27768660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27768660 is an abundant number, since it is smaller than the sum of its proper divisors (52669740).

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

27768660 is a wasteful number, since it uses less digits than its factorization.

27768660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16000 (or 15998 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 42.

The square root of 27768660 is about 5269.5977076054. The cubic root of 27768660 is about 302.8202923090.

The spelling of 27768660 in words is "twenty-seven million, seven hundred sixty-eight thousand, six hundred sixty".