1143297248 has 48 divisors (see below), whose sum is σ = 2355816960. Its totient is φ = 545145216.

The previous prime is 1143297229. The next prime is 1143297251. The reversal of 1143297248 is 8427923411.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262061 + ... + 266387.

It is an arithmetic number, because the mean of its divisors is an integer number (49079520).

Almost surely, 2^1143297248 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 1143297248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177908480).

1143297248 is an abundant number, since it is smaller than the sum of its proper divisors (1212519712).

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

1143297248 is a wasteful number, since it uses less digits than its factorization.

1143297248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4719 (or 4711 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 1143297248 is about 33812.6788054422. The cubic root of 1143297248 is about 1045.6501065310.

The spelling of 1143297248 in words is "one billion, one hundred forty-three million, two hundred ninety-seven thousand, two hundred forty-eight".