27964529 has 4 divisors (see below), whose sum is σ = 27982500. Its totient is φ = 27946560.

The previous prime is 27964513. The next prime is 27964553. The reversal of 27964529 is 92546972.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18722929 + 9241600 = 4327^2 + 3040^2 .

It is a cyclic number.

It is not a de Polignac number, because 27964529 - 2⁴ = 27964513 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 27964529.

It is not an unprimeable number, because it can be changed into a prime (27964579) by changing a digit.

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, 6404 + ... + 9845.

It is an arithmetic number, because the mean of its divisors is an integer number (6995625).

Almost surely, 2^27964529 is an apocalyptic number.

It is an amenable number.

27964529 is a deficient number, since it is larger than the sum of its proper divisors (17971).

27964529 is a wasteful number, since it uses less digits than its factorization.

27964529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17970.

The product of its digits is 272160, while the sum is 44.

The square root of 27964529 is about 5288.1498655012. The cubic root of 27964529 is about 303.5306158031.

The spelling of 27964529 in words is "twenty-seven million, nine hundred sixty-four thousand, five hundred twenty-nine".