2106810 has 84 divisors (see below), whose sum is σ = 6039918. Its totient is φ = 528768.

The previous prime is 2106809. The next prime is 2106829. The reversal of 2106810 is 186012.

It can be written as a sum of positive squares in 3 ways, for example, as 2047761 + 59049 = 1431^2 + 243^2 .

It is a super-2 number, since 2×2106810² = 8877296752200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (18) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 123922 + ... + 123938.

2^2106810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2106810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3019959).

2106810 is an abundant number, since it is smaller than the sum of its proper divisors (3933108).

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

2106810 is an equidigital number, since it uses as much as digits as its factorization.

2106810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 2106810 is about 1451.4854460173. The cubic root of 2106810 is about 128.1961916472.

It can be divided in two parts, 2106 and 810, that added together give a square (2916 = 54²).

The spelling of 2106810 in words is "two million, one hundred six thousand, eight hundred ten".