4040078628 has 24 divisors (see below), whose sum is σ = 9981371232. Its totient is φ = 1267475584.

The previous prime is 4040078621. The next prime is 4040078633. The reversal of 4040078628 is 8268700404.

4040078628 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (4040078621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9901950 + ... + 9902357.

It is an arithmetic number, because the mean of its divisors is an integer number (415890468).

Almost surely, 2^4040078628 is an apocalyptic number.

It is an amenable number.

4040078628 is an abundant number, since it is smaller than the sum of its proper divisors (5941292604).

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

4040078628 is a wasteful number, since it uses less digits than its factorization.

4040078628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19804331 (or 19804329 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 39.

The square root of 4040078628 is about 63561.6128492662. The cubic root of 4040078628 is about 1592.6851807032.

The spelling of 4040078628 in words is "four billion, forty million, seventy-eight thousand, six hundred twenty-eight".