2103636 has 12 divisors (see below), whose sum is σ = 4908512. Its totient is φ = 701208.

The previous prime is 2103617. The next prime is 2103653. The reversal of 2103636 is 6363012.

It is a tau number, because it is divible by the number of its divisors (12).

It is an alternating number because its digits alternate between even and odd.

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 87640 + ... + 87663.

2^2103636 is an apocalyptic number.

It is an amenable number.

2103636 is an abundant number, since it is smaller than the sum of its proper divisors (2804876).

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

2103636 is a wasteful number, since it uses less digits than its factorization.

2103636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175310 (or 175308 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 2103636 is about 1450.3916712392. The cubic root of 2103636 is about 128.1317815962.

Adding to 2103636 its reverse (6363012), we get a palindrome (8466648).

The spelling of 2103636 in words is "two million, one hundred three thousand, six hundred thirty-six".