2728236463889 has 8 divisors (see below), whose sum is σ = 2743552113120. Its totient is φ = 2712921638400.

The previous prime is 2728236463871. The next prime is 2728236463891. The reversal of 2728236463889 is 9883646328272.

It is a happy number.

2728236463889 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2728236463889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2728236463189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7177169 + ... + 7547729.

It is an arithmetic number, because the mean of its divisors is an integer number (342944014140).

Almost surely, 2^{2728236463889} is an apocalyptic number.

It is an amenable number.

2728236463889 is a deficient number, since it is larger than the sum of its proper divisors (15315649231).

2728236463889 is a wasteful number, since it uses less digits than its factorization.

2728236463889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411871.

The product of its digits is 334430208, while the sum is 68.

The spelling of 2728236463889 in words is "two trillion, seven hundred twenty-eight billion, two hundred thirty-six million, four hundred sixty-three thousand, eight hundred eighty-nine".