1222843280 has 40 divisors (see below), whose sum is σ = 2849668800. Its totient is φ = 488009088.

The previous prime is 1222843273. The next prime is 1222843289. The reversal of 1222843280 is 823482221.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (1222843289) 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 7 ways as a sum of consecutive naturals, for example, 17711 + ... + 52529.

It is an arithmetic number, because the mean of its divisors is an integer number (71241720).

Almost surely, 2^1222843280 is an apocalyptic number.

1222843280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1222843280 is an abundant number, since it is smaller than the sum of its proper divisors (1626825520).

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

1222843280 is a wasteful number, since it uses less digits than its factorization.

1222843280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35271 (or 35265 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 1222843280 is about 34969.1761412819. The cubic root of 1222843280 is about 1069.3591760735.

The spelling of 1222843280 in words is "one billion, two hundred twenty-two million, eight hundred forty-three thousand, two hundred eighty".