2138680 has 32 divisors (see below), whose sum is σ = 4861440. Its totient is φ = 846720.

The previous prime is 2138677. The next prime is 2138687. The reversal of 2138680 is 868312.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138687) 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, 4870 + ... + 5290.

It is an arithmetic number, because the mean of its divisors is an integer number (151920).

2^2138680 is an apocalyptic number.

2138680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2138680 is an abundant number, since it is smaller than the sum of its proper divisors (2722760).

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

2138680 is a wasteful number, since it uses less digits than its factorization.

2138680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559 (or 555 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 2138680 is about 1462.4226475270. The cubic root of 2138680 is about 128.8393730174.

The spelling of 2138680 in words is "two million, one hundred thirty-eight thousand, six hundred eighty".