2728705858 has 4 divisors (see below), whose sum is σ = 4093058790. Its totient is φ = 1364352928.

The previous prime is 2728705831. The next prime is 2728705873. The reversal of 2728705858 is 8585078272.

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

It can be written as a sum of positive squares in only one way, i.e., 2230389529 + 498316329 = 47227^2 + 22323^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 682176463 + ... + 682176466.

Almost surely, 2^2728705858 is an apocalyptic number.

2728705858 is a deficient number, since it is larger than the sum of its proper divisors (1364352932).

2728705858 is a wasteful number, since it uses less digits than its factorization.

2728705858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1364352931.

The product of its (nonzero) digits is 2508800, while the sum is 52.

The square root of 2728705858 is about 52237.0161666993. The cubic root of 2728705858 is about 1397.3941079708.

The spelling of 2728705858 in words is "two billion, seven hundred twenty-eight million, seven hundred five thousand, eight hundred fifty-eight".