726836128 has 24 divisors (see below), whose sum is σ = 1431565380. Its totient is φ = 363264000.

The previous prime is 726836093. The next prime is 726836141. The reversal of 726836128 is 821638627.

It can be written as a sum of positive squares in 2 ways, for example, as 640494864 + 86341264 = 25308^2 + 9292^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129378 + ... + 134878.

Almost surely, 2^726836128 is an apocalyptic number.

It is an amenable number.

726836128 is a deficient number, since it is larger than the sum of its proper divisors (704729252).

726836128 is a wasteful number, since it uses less digits than its factorization.

726836128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9640 (or 9632 counting only the distinct ones).

The product of its digits is 193536, while the sum is 43.

The square root of 726836128 is about 26959.8985161295. The cubic root of 726836128 is about 899.1086351744.

The spelling of 726836128 in words is "seven hundred twenty-six million, eight hundred thirty-six thousand, one hundred twenty-eight".