1296478326 has 32 divisors (see below), whose sum is σ = 3046272768. Its totient is φ = 362651040.

The previous prime is 1296478307. The next prime is 1296478349. The reversal of 1296478326 is 6238746921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 754666 + ... + 756381.

It is an arithmetic number, because the mean of its divisors is an integer number (95196024).

Almost surely, 2^1296478326 is an apocalyptic number.

1296478326 is an abundant number, since it is smaller than the sum of its proper divisors (1749794442).

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

1296478326 is a wasteful number, since it uses less digits than its factorization.

1296478326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511076.

The product of its digits is 870912, while the sum is 48.

The square root of 1296478326 is about 36006.6428037939. The cubic root of 1296478326 is about 1090.4064713035.

The spelling of 1296478326 in words is "one billion, two hundred ninety-six million, four hundred seventy-eight thousand, three hundred twenty-six".