2113236 has 48 divisors (see below), whose sum is σ = 5806080. Its totient is φ = 662400.

The previous prime is 2113229. The next prime is 2113249. The reversal of 2113236 is 6323112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1261 + ... + 2411.

It is an arithmetic number, because the mean of its divisors is an integer number (120960).

2^2113236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903040).

2113236 is an abundant number, since it is smaller than the sum of its proper divisors (3692844).

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

2113236 is a wasteful number, since it uses less digits than its factorization.

2113236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1181 (or 1173 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 2113236 is about 1453.6973550227. The cubic root of 2113236 is about 128.3263968065.

Adding to 2113236 its reverse (6323112), we get a palindrome (8436348).

The spelling of 2113236 in words is "two million, one hundred thirteen thousand, two hundred thirty-six".