2687173728 has 24 divisors (see below), whose sum is σ = 7053831288. Its totient is φ = 895724544.

The previous prime is 2687173717. The next prime is 2687173733. The reversal of 2687173728 is 8273717862.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

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, 13995601 + ... + 13995792.

It is an arithmetic number, because the mean of its divisors is an integer number (293909637).

Almost surely, 2^2687173728 is an apocalyptic number.

It is an amenable number.

2687173728 is an abundant number, since it is smaller than the sum of its proper divisors (4366657560).

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

2687173728 is a wasteful number, since it uses less digits than its factorization.

2687173728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27991406 (or 27991398 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 51.

The square root of 2687173728 is about 51837.9564412024. The cubic root of 2687173728 is about 1390.2681759193.

The spelling of 2687173728 in words is "two billion, six hundred eighty-seven million, one hundred seventy-three thousand, seven hundred twenty-eight".