2878724605 has 4 divisors (see below), whose sum is σ = 3454469532. Its totient is φ = 2302979680.

The previous prime is 2878724593. The next prime is 2878724633. The reversal of 2878724605 is 5064278782.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2017536889 + 861187716 = 44917^2 + 29346^2 .

It is not a de Polignac number, because 2878724605 - 2⁷ = 2878724477 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287872456 + ... + 287872465.

It is an arithmetic number, because the mean of its divisors is an integer number (863617383).

Almost surely, 2^2878724605 is an apocalyptic number.

It is an amenable number.

2878724605 is a deficient number, since it is larger than the sum of its proper divisors (575744927).

2878724605 is an equidigital number, since it uses as much as digits as its factorization.

2878724605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575744926.

The product of its (nonzero) digits is 1505280, while the sum is 49.

The square root of 2878724605 is about 53653.7473528178. The cubic root of 2878724605 is about 1422.5472702336.

The spelling of 2878724605 in words is "two billion, eight hundred seventy-eight million, seven hundred twenty-four thousand, six hundred five".