7321268736 has 240 divisors, whose sum is σ = 22656389184. Its totient is φ = 2270011392.

The previous prime is 7321268723. The next prime is 7321268741. The reversal of 7321268736 is 6378621237.

It is a junction number, because it is equal to n+sod(n) for n = 7321268691 and 7321268700.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3920475 + ... + 3922341.

Almost surely, 2^7321268736 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 7321268736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11328194592).

7321268736 is an abundant number, since it is smaller than the sum of its proper divisors (15335120448).

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

7321268736 is a wasteful number, since it uses less digits than its factorization.

7321268736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1951 (or 1932 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 7321268736 is about 85564.4127894302. The cubic root of 7321268736 is about 1941.7595486384.

The spelling of 7321268736 in words is "seven billion, three hundred twenty-one million, two hundred sixty-eight thousand, seven hundred thirty-six".