722330 has 32 divisors (see below), whose sum is σ = 1575936. Its totient is φ = 232704.

The previous prime is 722321. The next prime is 722333. The reversal of 722330 is 33227.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 722299 and 722308.

It is not an unprimeable number, because it can be changed into a prime (722333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 887 + ... + 1493.

It is an arithmetic number, because the mean of its divisors is an integer number (49248).

2⁷²²³³⁰ is an apocalyptic number.

722330 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

722330 is an abundant number, since it is smaller than the sum of its proper divisors (853606).

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

722330 is a wasteful number, since it uses less digits than its factorization.

722330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 722330 is about 849.8999941170. The cubic root of 722330 is about 89.7246729848.

Adding to 722330 its reverse (33227), we get a palindrome (755557).

The spelling of 722330 in words is "seven hundred twenty-two thousand, three hundred thirty".