723026 has 16 divisors (see below), whose sum is σ = 1166400. Its totient is φ = 335088.

The previous prime is 722983. The next prime is 723029. The reversal of 723026 is 620327.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 722989 and 723007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723029) by changing a digit.

723026 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 7 ways as a sum of consecutive naturals, for example, 1835 + ... + 2193.

It is an arithmetic number, because the mean of its divisors is an integer number (72900).

2⁷²³⁰²⁶ is an apocalyptic number.

723026 is a deficient number, since it is larger than the sum of its proper divisors (443374).

723026 is a wasteful number, since it uses less digits than its factorization.

723026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433.

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 723026 is about 850.3093554701. The cubic root of 723026 is about 89.7534817591.

The spelling of 723026 in words is "seven hundred twenty-three thousand, twenty-six".