2728605444 has 24 divisors (see below), whose sum is σ = 6368015808. Its totient is φ = 909353760.

The previous prime is 2728605431. The next prime is 2728605491. The reversal of 2728605444 is 4445068272.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2728605396 and 2728605405.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 49089 + ... + 88695.

It is an arithmetic number, because the mean of its divisors is an integer number (265333992).

Almost surely, 2^2728605444 is an apocalyptic number.

It is an amenable number.

2728605444 is an abundant number, since it is smaller than the sum of its proper divisors (3639410364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2728605444 is a wasteful number, since it uses less digits than its factorization.

2728605444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45355 (or 45353 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 42.

The square root of 2728605444 is about 52236.0550194978. The cubic root of 2728605444 is about 1397.3769667983.

The spelling of 2728605444 in words is "two billion, seven hundred twenty-eight million, six hundred five thousand, four hundred forty-four".