1143445248 has 252 divisors, whose sum is σ = 3739870008. Its totient is φ = 345876480.

The previous prime is 1143445241. The next prime is 1143445283. The reversal of 1143445248 is 8425443411.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143445241) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 2052586 + ... + 2053142.

It is an arithmetic number, because the mean of its divisors is an integer number (14840754).

Almost surely, 2^1143445248 is an apocalyptic number.

1143445248 is a gapful number since it is divisible by the number (18) 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 1143445248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1869935004).

1143445248 is an abundant number, since it is smaller than the sum of its proper divisors (2596424760).

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

1143445248 is an frugal number, since it uses more digits than its factorization.

1143445248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602 (or 573 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The square root of 1143445248 is about 33814.8672627884. The cubic root of 1143445248 is about 1045.6952244385.

Adding to 1143445248 its reverse (8425443411), we get a palindrome (9568888659).

The spelling of 1143445248 in words is "one billion, one hundred forty-three million, four hundred forty-five thousand, two hundred forty-eight".