27996139 has 8 divisors (see below), whose sum is σ = 30155840. Its totient is φ = 25905096.

The previous prime is 27996109. The next prime is 27996167. The reversal of 27996139 is 93169972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 27996139 - 2¹⁵ = 27963371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27996109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16317 + ... + 17950.

It is an arithmetic number, because the mean of its divisors is an integer number (3769480).

Almost surely, 2^27996139 is an apocalyptic number.

27996139 is a deficient number, since it is larger than the sum of its proper divisors (2159701).

27996139 is a wasteful number, since it uses less digits than its factorization.

27996139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34329.

The product of its digits is 183708, while the sum is 46.

The square root of 27996139 is about 5291.1377793439. The cubic root of 27996139 is about 303.6449390817.

It can be divided in two parts, 27 and 996139, that added together give a triangular number (996166 = T₁₄₁₁).

The spelling of 27996139 in words is "twenty-seven million, nine hundred ninety-six thousand, one hundred thirty-nine".