4078388820 has 96 divisors (see below), whose sum is σ = 12628425600. Its totient is φ = 975144960.

The previous prime is 4078388767. The next prime is 4078388837. The reversal of 4078388820 is 288838704.

4078388820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 4078388820.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5856 + ... + 90504.

It is an arithmetic number, because the mean of its divisors is an integer number (131546100).

Almost surely, 2^4078388820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4078388820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6314212800).

4078388820 is an abundant number, since it is smaller than the sum of its proper divisors (8550036780).

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

4078388820 is a wasteful number, since it uses less digits than its factorization.

4078388820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84745 (or 84743 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The square root of 4078388820 is about 63862.2644446625. The cubic root of 4078388820 is about 1597.7035832248.

The spelling of 4078388820 in words is "four billion, seventy-eight million, three hundred eighty-eight thousand, eight hundred twenty".