2040505400 has 48 divisors (see below), whose sum is σ = 4778868240. Its totient is φ = 810233600.

The previous prime is 2040505349. The next prime is 2040505409. The reversal of 2040505400 is 45050402.

It is a happy number.

2040505400 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040505409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9836 + ... + 64635.

It is an arithmetic number, because the mean of its divisors is an integer number (99559755).

Almost surely, 2^2040505400 is an apocalyptic number.

2040505400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2040505400 is an abundant number, since it is smaller than the sum of its proper divisors (2738362840).

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

2040505400 is a wasteful number, since it uses less digits than its factorization.

2040505400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74624 (or 74615 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 2040505400 is about 45171.9536881016. The cubic root of 2040505400 is about 1268.3698679195.

Adding to 2040505400 its reverse (45050402), we get a palindrome (2085555802).

The spelling of 2040505400 in words is "two billion, forty million, five hundred five thousand, four hundred".