4020571620 has 192 divisors, whose sum is σ = 13510640640. Its totient is φ = 986743296.

The previous prime is 4020571609. The next prime is 4020571631. The reversal of 4020571620 is 261750204.

It is an interprime number because it is at equal distance from previous prime (4020571609) and next prime (4020571631).

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3249642 + ... + 3250878.

It is an arithmetic number, because the mean of its divisors is an integer number (70367920).

Almost surely, 2^4020571620 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 4020571620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6755320320).

4020571620 is an abundant number, since it is smaller than the sum of its proper divisors (9490069020).

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

4020571620 is a wasteful number, since it uses less digits than its factorization.

4020571620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731 (or 1723 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 4020571620 is about 63407.9775738038. The cubic root of 4020571620 is about 1590.1176844186.

The spelling of 4020571620 in words is "four billion, twenty million, five hundred seventy-one thousand, six hundred twenty".