2123800 has 96 divisors (see below), whose sum is σ = 5937120. Its totient is φ = 691200.

The previous prime is 2123791. The next prime is 2123831. The reversal of 2123800 is 83212.

It is a happy number.

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, 51780 + ... + 51820.

It is an arithmetic number, because the mean of its divisors is an integer number (61845).

2^2123800 is an apocalyptic number.

2123800 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 2123800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2968560).

2123800 is an abundant number, since it is smaller than the sum of its proper divisors (3813320).

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

2123800 is a wasteful number, since it uses less digits than its factorization.

2123800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2123800 is about 1457.3263189828. The cubic root of 2123800 is about 128.5398746788.

The spelling of 2123800 in words is "two million, one hundred twenty-three thousand, eight hundred".