1288440412 has 12 divisors (see below), whose sum is σ = 2576880880. Its totient is φ = 552188736.

The previous prime is 1288440409. The next prime is 1288440443. The reversal of 1288440412 is 2140448821.

1288440412 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23007837 + ... + 23007892.

Almost surely, 2^1288440412 is an apocalyptic number.

It is an amenable number.

1288440412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1288440412 is a wasteful number, since it uses less digits than its factorization.

1288440412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46015740 (or 46015738 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 34.

The square root of 1288440412 is about 35894.8521657354. The cubic root of 1288440412 is about 1088.1483620760.

The spelling of 1288440412 in words is "one billion, two hundred eighty-eight million, four hundred forty thousand, four hundred twelve".