2020203540 has 72 divisors (see below), whose sum is σ = 6132016800. Its totient is φ = 538363584.

The previous prime is 2020203499. The next prime is 2020203571. The reversal of 2020203540 is 453020202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 375147 + ... + 380493.

It is an arithmetic number, because the mean of its divisors is an integer number (85166900).

Almost surely, 2^2020203540 is an apocalyptic number.

2020203540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020203540 is an abundant number, since it is smaller than the sum of its proper divisors (4111813260).

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

2020203540 is a wasteful number, since it uses less digits than its factorization.

2020203540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7461 (or 7456 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 2020203540 is about 44946.6744042315. The cubic root of 2020203540 is about 1264.1493215745.

Adding to 2020203540 its reverse (453020202), we get a palindrome (2473223742).

The spelling of 2020203540 in words is "two billion, twenty million, two hundred three thousand, five hundred forty".