20000442020 has 96 divisors (see below), whose sum is σ = 46080440448. Its totient is φ = 7247066112.

The previous prime is 20000441987. The next prime is 20000442041. The reversal of 20000442020 is 2024400002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20000441986 and 20000442004.

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, 4927832 + ... + 4931888.

It is an arithmetic number, because the mean of its divisors is an integer number (480004588).

Almost surely, 2^20000442020 is an apocalyptic number.

20000442020 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 20000442020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23040220224).

20000442020 is an abundant number, since it is smaller than the sum of its proper divisors (26079998428).

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

20000442020 is a wasteful number, since it uses less digits than its factorization.

20000442020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4429 (or 4427 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

Adding to 20000442020 its reverse (2024400002), we get a palindrome (22024842022).

The spelling of 20000442020 in words is "twenty billion, four hundred forty-two thousand, twenty".