728336338 has 8 divisors (see below), whose sum is σ = 1156769532. Its totient is φ = 342746496.

The previous prime is 728336333. The next prime is 728336353. The reversal of 728336338 is 833633827.

It can be written as a sum of positive squares in 2 ways, for example, as 727219089 + 1117249 = 26967^2 + 1057^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 728336294 and 728336303.

It is not an unprimeable number, because it can be changed into a prime (728336333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10710795 + ... + 10710862.

Almost surely, 2^728336338 is an apocalyptic number.

728336338 is a deficient number, since it is larger than the sum of its proper divisors (428433194).

728336338 is a wasteful number, since it uses less digits than its factorization.

728336338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21421676.

The product of its digits is 435456, while the sum is 43.

The square root of 728336338 is about 26987.7071645592. The cubic root of 728336338 is about 899.7268051460.

The spelling of 728336338 in words is "seven hundred twenty-eight million, three hundred thirty-six thousand, three hundred thirty-eight".