1283287172 has 6 divisors (see below), whose sum is σ = 2245752558. Its totient is φ = 641643584.

The previous prime is 1283287147. The next prime is 1283287219. The reversal of 1283287172 is 2717823821.

It can be written as a sum of positive squares in only one way, i.e., 926228356 + 357058816 = 30434^2 + 18896^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160410893 + ... + 160410900.

It is an arithmetic number, because the mean of its divisors is an integer number (374292093).

Almost surely, 2^1283287172 is an apocalyptic number.

It is an amenable number.

1283287172 is a deficient number, since it is larger than the sum of its proper divisors (962465386).

1283287172 is a wasteful number, since it uses less digits than its factorization.

1283287172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320821797 (or 320821795 counting only the distinct ones).

The product of its digits is 75264, while the sum is 41.

The square root of 1283287172 is about 35822.9978086703. The cubic root of 1283287172 is about 1086.6957060419.

The spelling of 1283287172 in words is "one billion, two hundred eighty-three million, two hundred eighty-seven thousand, one hundred seventy-two".