1143432320 has 32 divisors (see below), whose sum is σ = 2733519420. Its totient is φ = 457372672.

The previous prime is 1143432317. The next prime is 1143432337. The reversal of 1143432320 is 232343411.

It can be written as a sum of positive squares in 2 ways, for example, as 1132726336 + 10705984 = 33656^2 + 3272^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892667 + ... + 893946.

Almost surely, 2^1143432320 is an apocalyptic number.

1143432320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1143432320 is an abundant number, since it is smaller than the sum of its proper divisors (1590087100).

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

1143432320 is an equidigital number, since it uses as much as digits as its factorization.

1143432320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786632 (or 1786620 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1143432320 is about 33814.6761037275. The cubic root of 1143432320 is about 1045.6912834835.

Adding to 1143432320 its reverse (232343411), we get a palindrome (1375775731).

The spelling of 1143432320 in words is "one billion, one hundred forty-three million, four hundred thirty-two thousand, three hundred twenty".