1288860286 has 16 divisors (see below), whose sum is σ = 2220695136. Its totient is φ = 549563616.

The previous prime is 1288860283. The next prime is 1288860289. The reversal of 1288860286 is 6820688821.

It is an interprime number because it is at equal distance from previous prime (1288860283) and next prime (1288860289).

It is a super-2 number, since 2×1288860286² = 3322321673656003592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288860283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230901 + ... + 236416.

It is an arithmetic number, because the mean of its divisors is an integer number (138793446).

Almost surely, 2^1288860286 is an apocalyptic number.

1288860286 is a deficient number, since it is larger than the sum of its proper divisors (931834850).

1288860286 is a wasteful number, since it uses less digits than its factorization.

1288860286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467523.

The product of its (nonzero) digits is 589824, while the sum is 49.

The square root of 1288860286 is about 35900.7003552855. The cubic root of 1288860286 is about 1088.2665503343.

The spelling of 1288860286 in words is "one billion, two hundred eighty-eight million, eight hundred sixty thousand, two hundred eighty-six".