4020328620 has 384 divisors, whose sum is σ = 16102195200. Its totient is φ = 808185600.

The previous prime is 4020328601. The next prime is 4020328661. The reversal of 4020328620 is 268230204.

4020328620 is a `hidden beast` number, since 4 + 0 + 2 + 0 + 32 + 8 + 620 = 666.

It is a super-2 number, since 2×4020328620² = 32326084425582208800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1287421 + ... + 1290539.

It is an arithmetic number, because the mean of its divisors is an integer number (41932800).

Almost surely, 2^4020328620 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 4020328620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8051097600).

4020328620 is an abundant number, since it is smaller than the sum of its proper divisors (12081866580).

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

4020328620 is a wasteful number, since it uses less digits than its factorization.

4020328620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186 (or 3178 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 4020328620 is about 63406.0613821739. The cubic root of 4020328620 is about 1590.0856486437.

Adding to 4020328620 its reverse (268230204), we get a palindrome (4288558824).

The spelling of 4020328620 in words is "four billion, twenty million, three hundred twenty-eight thousand, six hundred twenty".