1296617344 has 64 divisors (see below), whose sum is σ = 2894209200. Its totient is φ = 573419520.

The previous prime is 1296617339. The next prime is 1296617351. The reversal of 1296617344 is 4437166921.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1296617344² = 3362433073523228672, 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 1296617344.

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 7 ways as a sum of consecutive naturals, for example, 39652 + ... + 64540.

Almost surely, 2^1296617344 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 1296617344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1447104600).

1296617344 is an abundant number, since it is smaller than the sum of its proper divisors (1597591856).

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

1296617344 is a wasteful number, since it uses less digits than its factorization.

1296617344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24951 (or 24939 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 1296617344 is about 36008.5732013919. The cubic root of 1296617344 is about 1090.4454437275.

The spelling of 1296617344 in words is "one billion, two hundred ninety-six million, six hundred seventeen thousand, three hundred forty-four".