2143800 has 96 divisors (see below), whose sum is σ = 7402800. Its totient is φ = 570240.

The previous prime is 2143793. The next prime is 2143829. The reversal of 2143800 is 83412.

It is a happy number.

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, 5202 + ... + 5598.

2^2143800 is an apocalyptic number.

2143800 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 2143800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3701400).

2143800 is an abundant number, since it is smaller than the sum of its proper divisors (5259000).

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

2143800 is a wasteful number, since it uses less digits than its factorization.

2143800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2143800 is about 1464.1721210295. The cubic root of 2143800 is about 128.9421049022.

The spelling of 2143800 in words is "two million, one hundred forty-three thousand, eight hundred".