27905992 has 32 divisors (see below), whose sum is σ = 56088000. Its totient is φ = 12982464.

The previous prime is 27905989. The next prime is 27906001. The reversal of 27905992 is 29950972.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4759 + ... + 8857.

It is an arithmetic number, because the mean of its divisors is an integer number (1752750).

Almost surely, 2^27905992 is an apocalyptic number.

It is an amenable number.

27905992 is an abundant number, since it is smaller than the sum of its proper divisors (28182008).

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

27905992 is a wasteful number, since it uses less digits than its factorization.

27905992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4165 (or 4161 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 43.

The square root of 27905992 is about 5282.6122325986. The cubic root of 27905992 is about 303.3186784639.

The spelling of 27905992 in words is "twenty-seven million, nine hundred five thousand, nine hundred ninety-two".