1283085872 has 20 divisors (see below), whose sum is σ = 2520994896. Its totient is φ = 632506560.

The previous prime is 1283085841. The next prime is 1283085911. The reversal of 1283085872 is 2785803821.

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, 563603 + ... + 565874.

Almost surely, 2^1283085872 is an apocalyptic number.

It is an amenable number.

1283085872 is a deficient number, since it is larger than the sum of its proper divisors (1237909024).

1283085872 is a wasteful number, since it uses less digits than its factorization.

1283085872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129556 (or 1129550 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 44.

The square root of 1283085872 is about 35820.1880508743. The cubic root of 1283085872 is about 1086.6388823655.

The spelling of 1283085872 in words is "one billion, two hundred eighty-three million, eighty-five thousand, eight hundred seventy-two".