2130636 has 12 divisors (see below), whose sum is σ = 4971512. Its totient is φ = 710208.

The previous prime is 2130631. The next prime is 2130671. The reversal of 2130636 is 6360312.

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

It is not an unprimeable number, because it can be changed into a prime (2130631) 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 3 ways as a sum of consecutive naturals, for example, 88765 + ... + 88788.

2^2130636 is an apocalyptic number.

It is an amenable number.

2130636 is an abundant number, since it is smaller than the sum of its proper divisors (2840876).

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

2130636 is a wasteful number, since it uses less digits than its factorization.

2130636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177560 (or 177558 counting only the distinct ones).

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

The square root of 2130636 is about 1459.6698256798. The cubic root of 2130636 is about 128.6776399255.

Adding to 2130636 its reverse (6360312), we get a palindrome (8490948).

The spelling of 2130636 in words is "two million, one hundred thirty thousand, six hundred thirty-six".