2678729770 has 8 divisors (see below), whose sum is σ = 4821713604. Its totient is φ = 1071491904.

The previous prime is 2678729731. The next prime is 2678729771. The reversal of 2678729770 is 779278762.

2678729770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2558235241 + 120494529 = 50579^2 + 10977^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2678729771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133936479 + ... + 133936498.

Almost surely, 2^2678729770 is an apocalyptic number.

2678729770 is a deficient number, since it is larger than the sum of its proper divisors (2142983834).

2678729770 is a wasteful number, since it uses less digits than its factorization.

2678729770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267872984.

The product of its (nonzero) digits is 4148928, while the sum is 55.

The square root of 2678729770 is about 51756.4466516008. The cubic root of 2678729770 is about 1388.8104257494.

The spelling of 2678729770 in words is "two billion, six hundred seventy-eight million, seven hundred twenty-nine thousand, seven hundred seventy".