2872780305 has 16 divisors (see below), whose sum is σ = 4597902144. Its totient is φ = 1531664960.

The previous prime is 2872780301. The next prime is 2872780319. The reversal of 2872780305 is 5030872782.

It is not a de Polignac number, because 2872780305 - 2² = 2872780301 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2872780301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21595 + ... + 78815.

It is an arithmetic number, because the mean of its divisors is an integer number (287368884).

Almost surely, 2^2872780305 is an apocalyptic number.

It is an amenable number.

2872780305 is a deficient number, since it is larger than the sum of its proper divisors (1725121839).

2872780305 is a wasteful number, since it uses less digits than its factorization.

2872780305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60576.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 2872780305 is about 53598.3237144596. The cubic root of 2872780305 is about 1421.5674526750.

The spelling of 2872780305 in words is "two billion, eight hundred seventy-two million, seven hundred eighty thousand, three hundred five".