726530 has 32 divisors (see below), whose sum is σ = 1524096. Its totient is φ = 244224.

The previous prime is 726527. The next prime is 726533. The reversal of 726530 is 35627.

It is an interprime number because it is at equal distance from previous prime (726527) and next prime (726533).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 726496 and 726505.

It is not an unprimeable number, because it can be changed into a prime (726533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6737 + ... + 6843.

It is an arithmetic number, because the mean of its divisors is an integer number (47628).

2⁷²⁶⁵³⁰ is an apocalyptic number.

726530 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

726530 is an abundant number, since it is smaller than the sum of its proper divisors (797566).

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

726530 is a wasteful number, since it uses less digits than its factorization.

726530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 726530 is about 852.3672917235. The cubic root of 726530 is about 89.8982388937.

The spelling of 726530 in words is "seven hundred twenty-six thousand, five hundred thirty".