728848826 has 4 divisors (see below), whose sum is σ = 1093273242. Its totient is φ = 364424412.

The previous prime is 728848823. The next prime is 728848849. The reversal of 728848826 is 628848827.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 499477801 + 229371025 = 22349^2 + 15145^2 .

It is a super-2 number, since 2×728848826² = 1062441222323156552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (728848823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182212205 + ... + 182212208.

Almost surely, 2^728848826 is an apocalyptic number.

728848826 is a deficient number, since it is larger than the sum of its proper divisors (364424416).

728848826 is a wasteful number, since it uses less digits than its factorization.

728848826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364424415.

The product of its digits is 2752512, while the sum is 53.

The square root of 728848826 is about 26997.2003363312. The cubic root of 728848826 is about 899.9377841766.

Subtracting from 728848826 its reverse (628848827), we obtain a palindrome (99999999).

The spelling of 728848826 in words is "seven hundred twenty-eight million, eight hundred forty-eight thousand, eight hundred twenty-six".