1243284448 has 96 divisors (see below), whose sum is σ = 2872800000. Its totient is φ = 529425792.

The previous prime is 1243284431. The next prime is 1243284457. The reversal of 1243284448 is 8444823421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243284448.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2491303 + ... + 2491801.

It is an arithmetic number, because the mean of its divisors is an integer number (29925000).

Almost surely, 2^1243284448 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 1243284448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1436400000).

1243284448 is an abundant number, since it is smaller than the sum of its proper divisors (1629515552).

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

1243284448 is an equidigital number, since it uses as much as digits as its factorization.

1243284448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757 (or 735 counting only the distinct ones).

The product of its digits is 196608, while the sum is 40.

The square root of 1243284448 is about 35260.2389101379. The cubic root of 1243284448 is about 1075.2847842575.

The spelling of 1243284448 in words is "one billion, two hundred forty-three million, two hundred eighty-four thousand, four hundred forty-eight".