2728042547 has 4 divisors (see below), whose sum is σ = 2888515656. Its totient is φ = 2567569440.

The previous prime is 2728042529. The next prime is 2728042571. The reversal of 2728042547 is 7452408272.

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

It is a cyclic number.

It is not a de Polignac number, because 2728042547 - 2⁶ = 2728042483 is a prime.

It is a super-2 number, since 2×2728042547² = 14884432276484494418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2728542547) 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, 80236529 + ... + 80236562.

It is an arithmetic number, because the mean of its divisors is an integer number (722128914).

Almost surely, 2^2728042547 is an apocalyptic number.

2728042547 is a deficient number, since it is larger than the sum of its proper divisors (160473109).

2728042547 is a wasteful number, since it uses less digits than its factorization.

2728042547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160473108.

The product of its (nonzero) digits is 250880, while the sum is 41.

The square root of 2728042547 is about 52230.6667294225. Note that the first 3 decimals coincide. The cubic root of 2728042547 is about 1397.2808696754.

The spelling of 2728042547 in words is "two billion, seven hundred twenty-eight million, forty-two thousand, five hundred forty-seven".