720222 has 32 divisors (see below), whose sum is σ = 1596672. Its totient is φ = 215424.

The previous prime is 720221. The next prime is 720229. The reversal of 720222 is 222027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720221) 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, 2193 + ... + 2499.

It is an arithmetic number, because the mean of its divisors is an integer number (49896).

2⁷²⁰²²² is an apocalyptic number.

720222 is an abundant number, since it is smaller than the sum of its proper divisors (876450).

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

720222 is a wasteful number, since it uses less digits than its factorization.

720222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352.

The product of its (nonzero) digits is 112, while the sum is 15.

The square root of 720222 is about 848.6589420963. The cubic root of 720222 is about 89.6373057610.

Adding to 720222 its reverse (222027), we get a palindrome (942249).

The spelling of 720222 in words is "seven hundred twenty thousand, two hundred twenty-two", and thus it is an iban number.