1143028782 has 72 divisors (see below), whose sum is σ = 2886129792. Its totient is φ = 325987200.

The previous prime is 1143028751. The next prime is 1143028811. The reversal of 1143028782 is 2878203411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 776307 + ... + 777777.

It is an arithmetic number, because the mean of its divisors is an integer number (40085136).

Almost surely, 2^1143028782 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143028782, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443064896).

1143028782 is an abundant number, since it is smaller than the sum of its proper divisors (1743101010).

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

1143028782 is a wasteful number, since it uses less digits than its factorization.

1143028782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2374 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1143028782 is about 33808.7086709919. The cubic root of 1143028782 is about 1045.5682545374.

The spelling of 1143028782 in words is "one billion, one hundred forty-three million, twenty-eight thousand, seven hundred eighty-two".