2705128490 has 8 divisors (see below), whose sum is σ = 4869231300. Its totient is φ = 1082051392.

The previous prime is 2705128429. The next prime is 2705128511. The reversal of 2705128490 is 948215072.

2705128490 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 2660599561 + 44528929 = 51581^2 + 6673^2 .

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

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, 135256415 + ... + 135256434.

Almost surely, 2^2705128490 is an apocalyptic number.

2705128490 is a deficient number, since it is larger than the sum of its proper divisors (2164102810).

2705128490 is a wasteful number, since it uses less digits than its factorization.

2705128490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270512856.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 2705128490 is about 52010.8497334931. The cubic root of 2705128490 is about 1393.3577347563.

The spelling of 2705128490 in words is "two billion, seven hundred five million, one hundred twenty-eight thousand, four hundred ninety".