726830 has 16 divisors (see below), whose sum is σ = 1409184. Its totient is φ = 268320.

The previous prime is 726811. The next prime is 726839. The reversal of 726830 is 38627.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an Ulam number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 726830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2666 + ... + 2925.

It is an arithmetic number, because the mean of its divisors is an integer number (88074).

2⁷²⁶⁸³⁰ is an apocalyptic number.

726830 is a deficient number, since it is larger than the sum of its proper divisors (682354).

726830 is a wasteful number, since it uses less digits than its factorization.

726830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 726830 is about 852.5432540347. The cubic root of 726830 is about 89.9106108354.

The spelling of 726830 in words is "seven hundred twenty-six thousand, eight hundred thirty".