2100786 has 16 divisors (see below), whose sum is σ = 4315584. Its totient is φ = 681264.

The previous prime is 2100781. The next prime is 2100793. The reversal of 2100786 is 6870012.

It is not an unprimeable number, because it can be changed into a prime (2100781) by changing a digit.

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, 4510 + ... + 4953.

It is an arithmetic number, because the mean of its divisors is an integer number (269724).

2^2100786 is an apocalyptic number.

2100786 is an abundant number, since it is smaller than the sum of its proper divisors (2214798).

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

2100786 is a wasteful number, since it uses less digits than its factorization.

2100786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9505.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 2100786 is about 1449.4088450123. The cubic root of 2100786 is about 128.0738912555.

Adding to 2100786 its reverse (6870012), we get a palindrome (8970798).

The spelling of 2100786 in words is "two million, one hundred thousand, seven hundred eighty-six".