726306 has 16 divisors (see below), whose sum is σ = 1660224. Its totient is φ = 207504.

The previous prime is 726301. The next prime is 726307. The reversal of 726306 is 603627.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (726301) by changing a digit.

726306 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8605 + ... + 8688.

It is an arithmetic number, because the mean of its divisors is an integer number (103764).

2⁷²⁶³⁰⁶ is an apocalyptic number.

726306 is an abundant number, since it is smaller than the sum of its proper divisors (933918).

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

726306 is a wasteful number, since it uses less digits than its factorization.

726306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17305.

The product of its (nonzero) digits is 1512, while the sum is 24.

The square root of 726306 is about 852.2358828400. The cubic root of 726306 is about 89.8889989562. Note that the first 3 decimals are identical.

The spelling of 726306 in words is "seven hundred twenty-six thousand, three hundred six".