726272638 has 16 divisors (see below), whose sum is σ = 1340811360. Its totient is φ = 287316576.

The previous prime is 726272629. The next prime is 726272639. The reversal of 726272638 is 836272627.

726272638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 726272594 and 726272603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726272639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1995073 + ... + 1995436.

It is an arithmetic number, because the mean of its divisors is an integer number (83800710).

Almost surely, 2^726272638 is an apocalyptic number.

726272638 is a deficient number, since it is larger than the sum of its proper divisors (614538722).

726272638 is a wasteful number, since it uses less digits than its factorization.

726272638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990531.

The product of its digits is 338688, while the sum is 43.

The square root of 726272638 is about 26949.4459683311. The cubic root of 726272638 is about 898.8762262044.

The spelling of 726272638 in words is "seven hundred twenty-six million, two hundred seventy-two thousand, six hundred thirty-eight".