4028042778 has 16 divisors (see below), whose sum is σ = 8056927200. Its totient is φ = 1342540656.

The previous prime is 4028042773. The next prime is 4028042819. The reversal of 4028042778 is 8772408204.

It is not an unprimeable number, because it can be changed into a prime (4028042773) 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, 39273 + ... + 97971.

It is an arithmetic number, because the mean of its divisors is an integer number (503557950).

Almost surely, 2^4028042778 is an apocalyptic number.

4028042778 is an abundant number, since it is smaller than the sum of its proper divisors (4028884422).

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

4028042778 is a wasteful number, since it uses less digits than its factorization.

4028042778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70141.

The product of its (nonzero) digits is 200704, while the sum is 42.

The square root of 4028042778 is about 63466.8636218933. The cubic root of 4028042778 is about 1591.1020112385.

The spelling of 4028042778 in words is "four billion, twenty-eight million, forty-two thousand, seven hundred seventy-eight".