2043045400 has 96 divisors (see below), whose sum is σ = 5206006080. Its totient is φ = 739472000.

The previous prime is 2043045383. The next prime is 2043045409. The reversal of 2043045400 is 45403402.

It is a happy number.

It is a super-2 number, since 2×2043045400² = 8348069012922320000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2043045409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 497355 + ... + 501445.

It is an arithmetic number, because the mean of its divisors is an integer number (54229230).

Almost surely, 2^2043045400 is an apocalyptic number.

2043045400 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 2043045400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2603003040).

2043045400 is an abundant number, since it is smaller than the sum of its proper divisors (3162960680).

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

2043045400 is a wasteful number, since it uses less digits than its factorization.

2043045400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4345 (or 4336 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 2043045400 is about 45200.0597344738. The cubic root of 2043045400 is about 1268.8959342600.

Adding to 2043045400 its reverse (45403402), we get a palindrome (2088448802).

The spelling of 2043045400 in words is "two billion, forty-three million, forty-five thousand, four hundred".