4028578015287 has 16 divisors (see below), whose sum is σ = 6264066886400. Its totient is φ = 2302044579576.

The previous prime is 4028578015277. The next prime is 4028578015289. The reversal of 4028578015287 is 7825108758204.

It is a happy number.

It is not a de Polignac number, because 4028578015287 - 2¹⁴ = 4028577998903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028578015289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1957519873 + ... + 1957521930.

It is an arithmetic number, because the mean of its divisors is an integer number (391504180400).

Almost surely, 2^{4028578015287} is an apocalyptic number.

4028578015287 is a deficient number, since it is larger than the sum of its proper divisors (2235488871113).

4028578015287 is an equidigital number, since it uses as much as digits as its factorization.

4028578015287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3915041827 (or 3915041813 counting only the distinct ones).

The product of its (nonzero) digits is 10035200, while the sum is 57.

The spelling of 4028578015287 in words is "four trillion, twenty-eight billion, five hundred seventy-eight million, fifteen thousand, two hundred eighty-seven".