1289387282 has 16 divisors (see below), whose sum is σ = 1972892160. Its totient is φ = 631876128.

The previous prime is 1289387279. The next prime is 1289387369. The reversal of 1289387282 is 2827839821.

It is a self number, because there is not a number n which added to its sum of digits gives 1289387282.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8138 + ... + 51429.

It is an arithmetic number, because the mean of its divisors is an integer number (123305760).

Almost surely, 2^1289387282 is an apocalyptic number.

1289387282 is a deficient number, since it is larger than the sum of its proper divisors (683504878).

1289387282 is a wasteful number, since it uses less digits than its factorization.

1289387282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59785.

The product of its digits is 774144, while the sum is 50.

The square root of 1289387282 is about 35908.0392391453. The cubic root of 1289387282 is about 1088.4148555142.

The spelling of 1289387282 in words is "one billion, two hundred eighty-nine million, three hundred eighty-seven thousand, two hundred eighty-two".