27939904 has 28 divisors (see below), whose sum is σ = 56496204. Its totient is φ = 13704704.

The previous prime is 27939887. The next prime is 27939907. The reversal of 27939904 is 40993972.

It can be written as a sum of positive squares in 2 ways, for example, as 18939904 + 9000000 = 4352^2 + 3000^2 .

It is not an unprimeable number, because it can be changed into a prime (27939907) 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, 727 + ... + 7510.

Almost surely, 2^27939904 is an apocalyptic number.

It is an amenable number.

27939904 is an abundant number, since it is smaller than the sum of its proper divisors (28556300).

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

27939904 is an equidigital number, since it uses as much as digits as its factorization.

27939904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8302 (or 8292 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 43.

The square root of 27939904 is about 5285.8210336711. The cubic root of 27939904 is about 303.4414953268.

The spelling of 27939904 in words is "twenty-seven million, nine hundred thirty-nine thousand, nine hundred four".