27942220 has 24 divisors (see below), whose sum is σ = 62131104. Its totient is φ = 10519296.

The previous prime is 27942193. The next prime is 27942241. The reversal of 27942220 is 2224972.

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 7 ways as a sum of consecutive naturals, for example, 40752 + ... + 41431.

It is an arithmetic number, because the mean of its divisors is an integer number (2588796).

Almost surely, 2^27942220 is an apocalyptic number.

27942220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27942220 is an abundant number, since it is smaller than the sum of its proper divisors (34188884).

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

27942220 is a wasteful number, since it uses less digits than its factorization.

27942220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82209 (or 82207 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 27942220 is about 5286.0401057881. The cubic root of 27942220 is about 303.4498794058.

The spelling of 27942220 in words is "twenty-seven million, nine hundred forty-two thousand, two hundred twenty".