2266220840 has 64 divisors (see below), whose sum is σ = 5499945360. Its totient is φ = 835430400.

The previous prime is 2266220837. The next prime is 2266220849. The reversal of 2266220840 is 480226622.

It can be written as a sum of positive squares in 8 ways, for example, as 1267787236 + 998433604 = 35606^2 + 31598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2266220797 and 2266220806.

It is not an unprimeable number, because it can be changed into a prime (2266220849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 361412 + ... + 367628.

Almost surely, 2^2266220840 is an apocalyptic number.

2266220840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2266220840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2749972680).

2266220840 is an abundant number, since it is smaller than the sum of its proper divisors (3233724520).

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

2266220840 is a wasteful number, since it uses less digits than its factorization.

2266220840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6942 (or 6938 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 2266220840 is about 47604.8405101834. The cubic root of 2266220840 is about 1313.5120954216.

The spelling of 2266220840 in words is "two billion, two hundred sixty-six million, two hundred twenty thousand, eight hundred forty".