2228081440 has 48 divisors (see below), whose sum is σ = 5668758648. Its totient is φ = 822675456.

The previous prime is 2228081419. The next prime is 2228081501. The reversal of 2228081440 is 441808222.

It can be written as a sum of positive squares in 4 ways, for example, as 1272776976 + 955304464 = 35676^2 + 30908^2 .

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 533517 + ... + 537676.

Almost surely, 2^2228081440 is an apocalyptic number.

2228081440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2228081440 is an abundant number, since it is smaller than the sum of its proper divisors (3440677208).

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

2228081440 is a wasteful number, since it uses less digits than its factorization.

2228081440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071221 (or 1071213 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 2228081440 is about 47202.5575578273. The cubic root of 2228081440 is about 1306.1017769743.

Adding to 2228081440 its reverse (441808222), we get a palindrome (2669889662).

The spelling of 2228081440 in words is "two billion, two hundred twenty-eight million, eighty-one thousand, four hundred forty".