7221032 has 72 divisors (see below), whose sum is σ = 17211150. Its totient is φ = 2830464.

The previous prime is 7221017. The next prime is 7221037. The reversal of 7221032 is 2301227.

It can be written as a sum of positive squares in 3 ways, for example, as 4351396 + 2869636 = 2086^2 + 1694^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7221032.

It is not an unprimeable number, because it can be changed into a prime (7221037) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 66194 + ... + 66302.

Almost surely, 2^7221032 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7221032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8605575).

7221032 is an abundant number, since it is smaller than the sum of its proper divisors (9990118).

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

7221032 is a wasteful number, since it uses less digits than its factorization.

7221032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 7221032 is about 2687.1977969625. The cubic root of 7221032 is about 193.2857142597.

Adding to 7221032 its reverse (2301227), we get a palindrome (9522259).

The spelling of 7221032 in words is "seven million, two hundred twenty-one thousand, thirty-two".