2020239640 has 16 divisors (see below), whose sum is σ = 4545539280. Its totient is φ = 808095840.

The previous prime is 2020239563. The next prime is 2020239653. The reversal of 2020239640 is 469320202.

It is a junction number, because it is equal to n+sod(n) for n = 2020239599 and 2020239608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25252956 + ... + 25253035.

It is an arithmetic number, because the mean of its divisors is an integer number (284096205).

Almost surely, 2^2020239640 is an apocalyptic number.

2020239640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020239640 is an abundant number, since it is smaller than the sum of its proper divisors (2525299640).

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

2020239640 is a wasteful number, since it uses less digits than its factorization.

2020239640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50506002 (or 50505998 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 2020239640 is about 44947.0759894345. The cubic root of 2020239640 is about 1264.1568514294.

Adding to 2020239640 its reverse (469320202), we get a palindrome (2489559842).

The spelling of 2020239640 in words is "two billion, twenty million, two hundred thirty-nine thousand, six hundred forty".