2135810 has 16 divisors (see below), whose sum is σ = 3934656. Its totient is φ = 834288.

The previous prime is 2135797. The next prime is 2135831. The reversal of 2135810 is 185312.

It is a super-2 number, since 2×2135810² = 9123368712200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2054 + ... + 2913.

It is an arithmetic number, because the mean of its divisors is an integer number (245916).

2^2135810 is an apocalyptic number.

2135810 is a deficient number, since it is larger than the sum of its proper divisors (1798846).

2135810 is a wasteful number, since it uses less digits than its factorization.

2135810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5017.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 2135810 is about 1461.4410696296. The cubic root of 2135810 is about 128.7817152522.

The spelling of 2135810 in words is "two million, one hundred thirty-five thousand, eight hundred ten".