2135800 has 48 divisors (see below), whose sum is σ = 5077800. Its totient is φ = 835200.

The previous prime is 2135797. The next prime is 2135831. The reversal of 2135800 is 85312.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11710 + ... + 11890.

2^2135800 is an apocalyptic number.

2135800 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 2135800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2538900).

2135800 is an abundant number, since it is smaller than the sum of its proper divisors (2942000).

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

2135800 is a wasteful number, since it uses less digits than its factorization.

2135800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 2135800 is about 1461.4376483449. The cubic root of 2135800 is about 128.7815142638.

The spelling of 2135800 in words is "two million, one hundred thirty-five thousand, eight hundred".