2133612 has 72 divisors (see below), whose sum is σ = 5992896. Its totient is φ = 635904.

The previous prime is 2133611. The next prime is 2133613. The reversal of 2133612 is 2163312.

2133612 is a `hidden beast` number, since 21 + 33 + 612 = 666.

It is an interprime number because it is at equal distance from previous prime (2133611) and next prime (2133613).

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 not an unprimeable number, because it can be changed into a prime (2133611) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21948 + ... + 22044.

2^2133612 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 2133612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2996448).

2133612 is an abundant number, since it is smaller than the sum of its proper divisors (3859284).

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

2133612 is a wasteful number, since it uses less digits than its factorization.

2133612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 162 counting only the distinct ones).

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

The square root of 2133612 is about 1460.6888785775. The cubic root of 2133612 is about 128.7375229056.

Adding to 2133612 its reverse (2163312), we get a palindrome (4296924).

It can be divided in two parts, 21 and 33612, that added together give a palindrome (33633).

The spelling of 2133612 in words is "two million, one hundred thirty-three thousand, six hundred twelve".