27905964 has 24 divisors (see below), whose sum is σ = 65630208. Its totient is φ = 9228240.

The previous prime is 27905963. The next prime is 27905971. The reversal of 27905964 is 46950972.

It is not an unprimeable number, because it can be changed into a prime (27905963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7632 + ... + 10679.

It is an arithmetic number, because the mean of its divisors is an integer number (2734592).

Almost surely, 2^27905964 is an apocalyptic number.

It is an amenable number.

27905964 is an abundant number, since it is smaller than the sum of its proper divisors (37724244).

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

27905964 is a wasteful number, since it uses less digits than its factorization.

27905964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18445 (or 18443 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 42.

The square root of 27905964 is about 5282.6095823939. The cubic root of 27905964 is about 303.3185770170.

The spelling of 27905964 in words is "twenty-seven million, nine hundred five thousand, nine hundred sixty-four".