27129992 has 16 divisors (see below), whose sum is σ = 50934300. Its totient is φ = 13547520.

The previous prime is 27129983. The next prime is 27130007. The reversal of 27129992 is 29992172.

It can be written as a sum of positive squares in 2 ways, for example, as 27102436 + 27556 = 5206^2 + 166^2 .

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 3 ways as a sum of consecutive naturals, for example, 6392 + ... + 9752.

Almost surely, 2^27129992 is an apocalyptic number.

It is an amenable number.

27129992 is a deficient number, since it is larger than the sum of its proper divisors (23804308).

27129992 is a wasteful number, since it uses less digits than its factorization.

27129992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4376 (or 4372 counting only the distinct ones).

The product of its digits is 40824, while the sum is 41.

The square root of 27129992 is about 5208.6458892883. The cubic root of 27129992 is about 300.4806812589.

The spelling of 27129992 in words is "twenty-seven million, one hundred twenty-nine thousand, nine hundred ninety-two".