2040256 has 28 divisors (see below), whose sum is σ = 4114800. Its totient is φ = 1003520.

The previous prime is 2040253. The next prime is 2040263. The reversal of 2040256 is 6520402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2040251) 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, 4320 + ... + 4768.

2^2040256 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 2040256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2057400).

2040256 is an abundant number, since it is smaller than the sum of its proper divisors (2074544).

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

2040256 is an equidigital number, since it uses as much as digits as its factorization.

2040256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2040256 is about 1428.3753008226. The cubic root of 2040256 is about 126.8318190472.

Adding to 2040256 its reverse (6520402), we get a palindrome (8560658).

The spelling of 2040256 in words is "two million, forty thousand, two hundred fifty-six".