1222768320 has 224 divisors, whose sum is σ = 4108216320. Its totient is φ = 307507200.

The previous prime is 1222768307. The next prime is 1222768321. The reversal of 1222768320 is 238672221.

It is not an unprimeable number, because it can be changed into a prime (1222768321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1743970 + ... + 1744670.

Almost surely, 2^1222768320 is an apocalyptic number.

1222768320 is a gapful number since it is divisible by the number (10) 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 1222768320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2054108160).

1222768320 is an abundant number, since it is smaller than the sum of its proper divisors (2885448000).

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

1222768320 is a wasteful number, since it uses less digits than its factorization.

1222768320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823 (or 813 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1222768320 is about 34968.1043237977. The cubic root of 1222768320 is about 1069.3373251399.

The spelling of 1222768320 in words is "one billion, two hundred twenty-two million, seven hundred sixty-eight thousand, three hundred twenty".