2043400 has 48 divisors (see below), whose sum is σ = 5038740. Its totient is φ = 768000.

The previous prime is 2043397. The next prime is 2043401. The reversal of 2043400 is 43402.

It can be written as a sum of positive squares in 6 ways, for example, as 1406596 + 636804 = 1186^2 + 798^2 .

It is not an unprimeable number, because it can be changed into a prime (2043401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3100 + ... + 3700.

2^2043400 is an apocalyptic number.

2043400 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 2043400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2519370).

2043400 is an abundant number, since it is smaller than the sum of its proper divisors (2995340).

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

2043400 is a wasteful number, since it uses less digits than its factorization.

2043400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 2043400 is about 1429.4754282603. The cubic root of 2043400 is about 126.8969341744.

Adding to 2043400 its reverse (43402), we get a palindrome (2086802).

The spelling of 2043400 in words is "two million, forty-three thousand, four hundred".