2020540 has 12 divisors (see below), whose sum is σ = 4243176. Its totient is φ = 808208.

The previous prime is 2020537. The next prime is 2020547. The reversal of 2020540 is 450202.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2020540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50494 + ... + 50533.

It is an arithmetic number, because the mean of its divisors is an integer number (353598).

2^2020540 is an apocalyptic number.

2020540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2020540 is an abundant number, since it is smaller than the sum of its proper divisors (2222636).

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

2020540 is a wasteful number, since it uses less digits than its factorization.

2020540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101036 (or 101034 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 13.

The square root of 2020540 is about 1421.4569989979. The cubic root of 2020540 is about 126.4219498013.

Adding to 2020540 its reverse (450202), we get a palindrome (2470742).

The spelling of 2020540 in words is "two million, twenty thousand, five hundred forty".