1296603396 has 384 divisors, whose sum is σ = 4257792000. Its totient is φ = 335923200.

The previous prime is 1296603383. The next prime is 1296603397. The reversal of 1296603396 is 6933066921.

It is a happy number.

1296603396 is a `hidden beast` number, since 1 + 2 + 9 + 6 + 603 + 39 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (1296603397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 11895390 + ... + 11895498.

It is an arithmetic number, because the mean of its divisors is an integer number (11088000).

Almost surely, 2^1296603396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1296603396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2128896000).

1296603396 is an abundant number, since it is smaller than the sum of its proper divisors (2961188604).

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

1296603396 is a wasteful number, since it uses less digits than its factorization.

1296603396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 192 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 45.

The square root of 1296603396 is about 36008.3795247717. The cubic root of 1296603396 is about 1090.4415336591.

The spelling of 1296603396 in words is "one billion, two hundred ninety-six million, six hundred three thousand, three hundred ninety-six".