2020100920 has 64 divisors (see below), whose sum is σ = 4639939200. Its totient is φ = 791345280.

The previous prime is 2020100897. The next prime is 2020100933. The reversal of 2020100920 is 290010202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2020100894 and 2020100903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477615 + ... + 481825.

It is an arithmetic number, because the mean of its divisors is an integer number (72499050).

Almost surely, 2^2020100920 is an apocalyptic number.

2020100920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2020100920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2319969600).

2020100920 is an abundant number, since it is smaller than the sum of its proper divisors (2619838280).

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

2020100920 is a wasteful number, since it uses less digits than its factorization.

2020100920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468 (or 4464 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2020100920 is about 44945.5328147303. The cubic root of 2020100920 is about 1264.1279162726.

The spelling of 2020100920 in words is "two billion, twenty million, one hundred thousand, nine hundred twenty".