7230222 has 72 divisors (see below), whose sum is σ = 17713800. Its totient is φ = 2204496.

The previous prime is 7230221. The next prime is 7230229. The reversal of 7230222 is 2220327.

7230222 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×7230222² = 104552220338568, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 7230195 and 7230204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7230221) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 249304 + ... + 249332.

It is an arithmetic number, because the mean of its divisors is an integer number (246025).

Almost surely, 2^7230222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7230222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8856900).

7230222 is an abundant number, since it is smaller than the sum of its proper divisors (10483578).

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

7230222 is an equidigital number, since it uses as much as digits as its factorization.

7230222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 53 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 7230222 is about 2688.9072129770. The cubic root of 7230222 is about 193.3676758916.

Adding to 7230222 its reverse (2220327), we get a palindrome (9450549).

The spelling of 7230222 in words is "seven million, two hundred thirty thousand, two hundred twenty-two".