2138836 has 12 divisors (see below), whose sum is σ = 4277728. Its totient is φ = 916632.

The previous prime is 2138833. The next prime is 2138861. The reversal of 2138836 is 6388312.

2138836 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 2138798 and 2138807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138831) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38166 + ... + 38221.

2^2138836 is an apocalyptic number.

It is an amenable number.

2138836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2138836 is a wasteful number, since it uses less digits than its factorization.

2138836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76398 (or 76396 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 2138836 is about 1462.4759827088. The cubic root of 2138836 is about 128.8425055498.

The spelling of 2138836 in words is "two million, one hundred thirty-eight thousand, eight hundred thirty-six".