1286205288 has 32 divisors (see below), whose sum is σ = 3220208160. Its totient is φ = 428109120.

The previous prime is 1286205253. The next prime is 1286205289. The reversal of 1286205288 is 8825026821.

It is not an unprimeable number, because it can be changed into a prime (1286205289) 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, 22195 + ... + 55362.

It is an arithmetic number, because the mean of its divisors is an integer number (100631505).

Almost surely, 2^1286205288 is an apocalyptic number.

It is an amenable number.

1286205288 is an abundant number, since it is smaller than the sum of its proper divisors (1934002872).

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

1286205288 is a wasteful number, since it uses less digits than its factorization.

1286205288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78257 (or 78253 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 1286205288 is about 35863.7043262405. The cubic root of 1286205288 is about 1087.5187755247.

The spelling of 1286205288 in words is "one billion, two hundred eighty-six million, two hundred five thousand, two hundred eighty-eight".