1296884416 has 28 divisors (see below), whose sum is σ = 2579293800. Its totient is φ = 646983680.

The previous prime is 1296884363. The next prime is 1296884419. The reversal of 1296884416 is 6144886921.

It is a happy number.

It is a super-2 number, since 2×1296884416² = 3363818376927322112, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1296884416.

It is not an unprimeable number, because it can be changed into a prime (1296884419) by changing a digit.

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, 6171 + ... + 51301.

Almost surely, 2^1296884416 is an apocalyptic number.

1296884416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1296884416 is a deficient number, since it is larger than the sum of its proper divisors (1282409384).

1296884416 is an equidigital number, since it uses as much as digits as its factorization.

1296884416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45592 (or 45582 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 1296884416 is about 36012.2814606351. The cubic root of 1296884416 is about 1090.5203071028.

The spelling of 1296884416 in words is "one billion, two hundred ninety-six million, eight hundred eighty-four thousand, four hundred sixteen".