2140236 has 96 divisors (see below), whose sum is σ = 6720000. Its totient is φ = 575424.

The previous prime is 2140231. The next prime is 2140253. The reversal of 2140236 is 6320412.

2140236 = T₂₄₈ + T₂₄₉ + ... + T₃₀₃.

It is a happy number.

It is a super-2 number, since 2×2140236² = 9161220271392, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2140231) 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 31 ways as a sum of consecutive naturals, for example, 14290 + ... + 14438.

It is an arithmetic number, because the mean of its divisors is an integer number (70000).

2^2140236 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 2140236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3360000).

2140236 is an abundant number, since it is smaller than the sum of its proper divisors (4579764).

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

2140236 is a wasteful number, since it uses less digits than its factorization.

2140236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 2140236 is about 1462.9545447484. The cubic root of 2140236 is about 128.8706112057.

Adding to 2140236 its reverse (6320412), we get a palindrome (8460648).

The spelling of 2140236 in words is "two million, one hundred forty thousand, two hundred thirty-six".