2163800 has 48 divisors (see below), whose sum is σ = 5208000. Its totient is φ = 835200.

The previous prime is 2163787. The next prime is 2163809. The reversal of 2163800 is 83612.

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 (2163809) 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, 6026 + ... + 6374.

It is an arithmetic number, because the mean of its divisors is an integer number (108500).

2^2163800 is an apocalyptic number.

2163800 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 2163800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2604000).

2163800 is an abundant number, since it is smaller than the sum of its proper divisors (3044200).

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

2163800 is a wasteful number, since it uses less digits than its factorization.

2163800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 2163800 is about 1470.9860638361. The cubic root of 2163800 is about 129.3418411758.

The spelling of 2163800 in words is "two million, one hundred sixty-three thousand, eight hundred".