2865640730 has 16 divisors (see below), whose sum is σ = 5165829864. Its totient is φ = 1144550400.

The previous prime is 2865640711. The next prime is 2865640741. The reversal of 2865640730 is 370465682.

It is a happy number.

2865640730 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 4 ways, for example, as 1857006649 + 1008634081 = 43093^2 + 31759^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206171 + ... + 219630.

Almost surely, 2^2865640730 is an apocalyptic number.

2865640730 is a deficient number, since it is larger than the sum of its proper divisors (2300189134).

2865640730 is a wasteful number, since it uses less digits than its factorization.

2865640730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426481.

The product of its (nonzero) digits is 241920, while the sum is 41.

The square root of 2865640730 is about 53531.6796859579. The cubic root of 2865640730 is about 1420.3888259424.

The spelling of 2865640730 in words is "two billion, eight hundred sixty-five million, six hundred forty thousand, seven hundred thirty".