27666930 has 64 divisors (see below), whose sum is σ = 70149888. Its totient is φ = 6969600.

The previous prime is 27666889. The next prime is 27666943. The reversal of 27666930 is 3966672.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69492 + ... + 69888.

It is an arithmetic number, because the mean of its divisors is an integer number (1096092).

Almost surely, 2^27666930 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27666930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35074944).

27666930 is an abundant number, since it is smaller than the sum of its proper divisors (42482958).

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

27666930 is a wasteful number, since it uses less digits than its factorization.

27666930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 27666930 is about 5259.9363114015. The cubic root of 27666930 is about 302.4500475311.

The spelling of 27666930 in words is "twenty-seven million, six hundred sixty-six thousand, nine hundred thirty".