27694129 has 4 divisors (see below), whose sum is σ = 28587520. Its totient is φ = 26800740.

The previous prime is 27694127. The next prime is 27694141. The reversal of 27694129 is 92149672.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 27694129 - 2¹ = 27694127 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 27694091 and 27694100.

It is not an unprimeable number, because it can be changed into a prime (27694123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446649 + ... + 446710.

It is an arithmetic number, because the mean of its divisors is an integer number (7146880).

Almost surely, 2^27694129 is an apocalyptic number.

It is an amenable number.

27694129 is a deficient number, since it is larger than the sum of its proper divisors (893391).

27694129 is an equidigital number, since it uses as much as digits as its factorization.

27694129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 893390.

The product of its digits is 54432, while the sum is 40.

The square root of 27694129 is about 5262.5211638529. The cubic root of 27694129 is about 302.5491266432.

The spelling of 27694129 in words is "twenty-seven million, six hundred ninety-four thousand, one hundred twenty-nine".