1152143244 has 192 divisors, whose sum is σ = 3643960320. Its totient is φ = 307307520.

The previous prime is 1152143243. The next prime is 1152143249. The reversal of 1152143244 is 4423412511.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1152143243) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2017479 + ... + 2018049.

It is an arithmetic number, because the mean of its divisors is an integer number (18978960).

Almost surely, 2^1152143244 is an apocalyptic number.

1152143244 is a gapful number since it is divisible by the number (14) 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 1152143244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1821980160).

1152143244 is an abundant number, since it is smaller than the sum of its proper divisors (2491817076).

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

1152143244 is a wasteful number, since it uses less digits than its factorization.

1152143244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 757 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 1152143244 is about 33943.2356147731. The cubic root of 1152143244 is about 1048.3400055911.

Adding to 1152143244 its reverse (4423412511), we get a palindrome (5575555755).

The spelling of 1152143244 in words is "one billion, one hundred fifty-two million, one hundred forty-three thousand, two hundred forty-four".