1121568448 has 336 divisors, whose sum is σ = 3166859808. Its totient is φ = 387072000.

The previous prime is 1121568443. The next prime is 1121568449. The reversal of 1121568448 is 8448651211.

It is a self number, because there is not a number n which added to its sum of digits gives 1121568448.

It is not an unprimeable number, because it can be changed into a prime (1121568443) 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 47 ways as a sum of consecutive naturals, for example, 18386338 + ... + 18386398.

It is an arithmetic number, because the mean of its divisors is an integer number (9425178).

Almost surely, 2^1121568448 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1121568448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1583429904).

1121568448 is an abundant number, since it is smaller than the sum of its proper divisors (2045291360).

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

1121568448 is a wasteful number, since it uses less digits than its factorization.

1121568448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152 (or 135 counting only the distinct ones).

The product of its digits is 61440, while the sum is 40.

The square root of 1121568448 is about 33489.8260371713. The cubic root of 1121568448 is about 1038.9833655042.

The spelling of 1121568448 in words is "one billion, one hundred twenty-one million, five hundred sixty-eight thousand, four hundred forty-eight".