2164236 has 36 divisors (see below), whose sum is σ = 5399352. Its totient is φ = 672384.

The previous prime is 2164229. The next prime is 2164247. The reversal of 2164236 is 6324612.

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

It is a d-powerful number, because it can be written as 2 + 1 + 6 + 4⁸ + 2²¹ + 3⁵ + 6⁴ .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20961 + ... + 21063.

It is an arithmetic number, because the mean of its divisors is an integer number (149982).

2^2164236 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 2164236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2699676).

2164236 is an abundant number, since it is smaller than the sum of its proper divisors (3235116).

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

2164236 is a wasteful number, since it uses less digits than its factorization.

2164236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 125 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 2164236 is about 1471.1342562798. The cubic root of 2164236 is about 129.3505279391.

Adding to 2164236 its reverse (6324612), we get a palindrome (8488848).

The spelling of 2164236 in words is "two million, one hundred sixty-four thousand, two hundred thirty-six".