1143022320 has 320 divisors, whose sum is σ = 4360435200. Its totient is φ = 272885760.

The previous prime is 1143022277. The next prime is 1143022367. The reversal of 1143022320 is 232203411.

1143022320 is a `hidden beast` number, since 1 + 1 + 430 + 2 + 232 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1143022293 and 1143022302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1734151 + ... + 1734809.

It is an arithmetic number, because the mean of its divisors is an integer number (13626360).

Almost surely, 2^1143022320 is an apocalyptic number.

1143022320 is a gapful number since it is divisible by the number (10) 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 1143022320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2180217600).

1143022320 is an abundant number, since it is smaller than the sum of its proper divisors (3217412880).

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

1143022320 is a wasteful number, since it uses less digits than its factorization.

1143022320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765 (or 753 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1143022320 is about 33808.6131037640. The cubic root of 1143022320 is about 1045.5662841948.

Adding to 1143022320 its reverse (232203411), we get a palindrome (1375225731).

The spelling of 1143022320 in words is "one billion, one hundred forty-three million, twenty-two thousand, three hundred twenty".