1143007236 has 108 divisors (see below), whose sum is σ = 3361513792. Its totient is φ = 320791968.

The previous prime is 1143007211. The next prime is 1143007237. The reversal of 1143007236 is 6327003411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143007237) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 876561 + ... + 877863.

Almost surely, 2^1143007236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143007236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1680756896).

1143007236 is an abundant number, since it is smaller than the sum of its proper divisors (2218506556).

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

1143007236 is a wasteful number, since it uses less digits than its factorization.

1143007236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 1143007236 is about 33808.3900237796. The cubic root of 1143007236 is about 1045.5616848705.

The spelling of 1143007236 in words is "one billion, one hundred forty-three million, seven thousand, two hundred thirty-six".