3078042640 has 20 divisors (see below), whose sum is σ = 7156449324. Its totient is φ = 1231217024.

The previous prime is 3078042613. The next prime is 3078042647. The reversal of 3078042640 is 462408703.

3078042640 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 669981456 + 2408061184 = 25884^2 + 49072^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 3078042596 and 3078042605.

It is not an unprimeable number, because it can be changed into a prime (3078042647) 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, 19237687 + ... + 19237846.

Almost surely, 2^3078042640 is an apocalyptic number.

It is an amenable number.

3078042640 is an abundant number, since it is smaller than the sum of its proper divisors (4078406684).

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

3078042640 is a wasteful number, since it uses less digits than its factorization.

3078042640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38475546 (or 38475540 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 3078042640 is about 55480.1103099120. The cubic root of 3078042640 is about 1454.6489928475.

The spelling of 3078042640 in words is "three billion, seventy-eight million, forty-two thousand, six hundred forty".