1280081288 has 16 divisors (see below), whose sum is σ = 2415442380. Its totient is φ = 635963328.

The previous prime is 1280081273. The next prime is 1280081293. The reversal of 1280081288 is 8821800821.

It can be written as a sum of positive squares in 2 ways, for example, as 1266078724 + 14002564 = 35582^2 + 3742^2 .

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, 508331 + ... + 510842.

Almost surely, 2^1280081288 is an apocalyptic number.

It is an amenable number.

1280081288 is a deficient number, since it is larger than the sum of its proper divisors (1135361092).

1280081288 is a wasteful number, since it uses less digits than its factorization.

1280081288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019336 (or 1019332 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 38.

The square root of 1280081288 is about 35778.2236562969. The cubic root of 1280081288 is about 1085.7900304826.

The spelling of 1280081288 in words is "one billion, two hundred eighty million, eighty-one thousand, two hundred eighty-eight".