7530222 has 32 divisors (see below), whose sum is σ = 17568000. Its totient is φ = 2150904.

The previous prime is 7530217. The next prime is 7530239. The reversal of 7530222 is 2220357.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229 + ... + 3887.

It is an arithmetic number, because the mean of its divisors is an integer number (549000).

Almost surely, 2^7530222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7530222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8784000).

7530222 is an abundant number, since it is smaller than the sum of its proper divisors (10037778).

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

7530222 is a wasteful number, since it uses less digits than its factorization.

7530222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3685 (or 3671 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 7530222 is about 2744.1249971530. The cubic root of 7530222 is about 196.0059522002.

Adding to 7530222 its reverse (2220357), we get a palindrome (9750579).

The spelling of 7530222 in words is "seven million, five hundred thirty thousand, two hundred twenty-two".