2026440256 has 63 divisors (see below), whose sum is σ = 4284618177. Its totient is φ = 950737920.

The previous prime is 2026440253. The next prime is 2026440281. The reversal of 2026440256 is 6520446202.

The square root of 2026440256 is 45016.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1577678400 + 448761856 = 39720^2 + 21184^2 .

It is a super-2 number, since 2×2026440256² = 8212920222274691072, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2026440253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6122011 + ... + 6122341.

Almost surely, 2^2026440256 is an apocalyptic number.

2026440256 is the 45016-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2026440256

2026440256 is an abundant number, since it is smaller than the sum of its proper divisors (2258177921).

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

2026440256 is an frugal number, since it uses more digits than its factorization.

2026440256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708 (or 350 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The cubic root of 2026440256 is about 1265.4488673542.

Adding to 2026440256 its reverse (6520446202), we get a palindrome (8546886458).

The spelling of 2026440256 in words is "two billion, twenty-six million, four hundred forty thousand, two hundred fifty-six".