2728194878715 has 16 divisors (see below), whose sum is σ = 4365146292000. Its totient is φ = 1455025773312.

The previous prime is 2728194878699. The next prime is 2728194878723. The reversal of 2728194878715 is 5178784918272.

It is not a de Polignac number, because 2728194878715 - 2⁴ = 2728194878699 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2728194878715.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1455711 + ... + 2752359.

It is an arithmetic number, because the mean of its divisors is an integer number (272821643250).

Almost surely, 2^{2728194878715} is an apocalyptic number.

2728194878715 is a deficient number, since it is larger than the sum of its proper divisors (1636951413285).

2728194878715 is a wasteful number, since it uses less digits than its factorization.

2728194878715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436926.

The product of its digits is 126443520, while the sum is 69.

The spelling of 2728194878715 in words is "two trillion, seven hundred twenty-eight billion, one hundred ninety-four million, eight hundred seventy-eight thousand, seven hundred fifteen".