2130684 has 24 divisors (see below), whose sum is σ = 4997328. Its totient is φ = 706560.

The previous prime is 2130683. The next prime is 2130701. The reversal of 2130684 is 4860312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3004 + ... + 3644.

It is an arithmetic number, because the mean of its divisors is an integer number (208222).

2^2130684 is an apocalyptic number.

It is an amenable number.

2130684 is an abundant number, since it is smaller than the sum of its proper divisors (2866644).

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

2130684 is a wasteful number, since it uses less digits than its factorization.

2130684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 2130684 is about 1459.6862676617. The cubic root of 2130684 is about 128.6786062223.

Adding to 2130684 its reverse (4860312), we get a palindrome (6990996).

The spelling of 2130684 in words is "two million, one hundred thirty thousand, six hundred eighty-four".