723430 has 16 divisors (see below), whose sum is σ = 1321344. Its totient is φ = 285120.

The previous prime is 723421. The next prime is 723439. The reversal of 723430 is 34327.

723430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (723421) and next prime (723439).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 723398 and 723407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (82584).

2⁷²³⁴³⁰ is an apocalyptic number.

723430 is a deficient number, since it is larger than the sum of its proper divisors (597914).

723430 is a wasteful number, since it uses less digits than its factorization.

723430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 723430 is about 850.5468828936. The cubic root of 723430 is about 89.7701956140.

Adding to 723430 its reverse (34327), we get a palindrome (757757).

The spelling of 723430 in words is "seven hundred twenty-three thousand, four hundred thirty".