723330 has 80 divisors (see below), whose sum is σ = 2090880. Its totient is φ = 178848.

The previous prime is 723319. The next prime is 723337. The reversal of 723330 is 33327.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (723337) 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 39 ways as a sum of consecutive naturals, for example, 15367 + ... + 15413.

It is an arithmetic number, because the mean of its divisors is an integer number (26136).

2⁷²³³³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 723330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1045440).

723330 is an abundant number, since it is smaller than the sum of its proper divisors (1367550).

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

723330 is a wasteful number, since it uses less digits than its factorization.

723330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 18.

The square root of 723330 is about 850.4880951548. The cubic root of 723330 is about 89.7660591008.

Adding to 723330 its reverse (33327), we get a palindrome (756657).

The spelling of 723330 in words is "seven hundred twenty-three thousand, three hundred thirty".