726738 has 8 divisors (see below), whose sum is σ = 1453488. Its totient is φ = 242244.

The previous prime is 726707. The next prime is 726751. The reversal of 726738 is 837627.

726738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

726738 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 726699 and 726708.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60556 + ... + 60567.

It is an arithmetic number, because the mean of its divisors is an integer number (181686).

2⁷²⁶⁷³⁸ is an apocalyptic number.

726738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

726738 is a wasteful number, since it uses less digits than its factorization.

726738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121128.

The product of its digits is 14112, while the sum is 33.

The square root of 726738 is about 852.4892961205. The cubic root of 726738 is about 89.9068171353.

Subtracting 726738 from its reverse (837627), we obtain a square (110889 = 333²).

The spelling of 726738 in words is "seven hundred twenty-six thousand, seven hundred thirty-eight".