1304688736 has 96 divisors (see below), whose sum is σ = 2829103200. Its totient is φ = 588656640.

The previous prime is 1304688667. The next prime is 1304688739. The reversal of 1304688736 is 6378864031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1304688739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4850010 + ... + 4850278.

It is an arithmetic number, because the mean of its divisors is an integer number (29469825).

Almost surely, 2^1304688736 is an apocalyptic number.

1304688736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1304688736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1414551600).

1304688736 is an abundant number, since it is smaller than the sum of its proper divisors (1524414464).

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

1304688736 is a wasteful number, since it uses less digits than its factorization.

1304688736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 1304688736 is about 36120.4753014132. The cubic root of 1304688736 is about 1092.7034249155.

The spelling of 1304688736 in words is "one billion, three hundred four million, six hundred eighty-eight thousand, seven hundred thirty-six".