7224528 has 40 divisors (see below), whose sum is σ = 19123776. Its totient is φ = 2348800.

The previous prime is 7224521. The next prime is 7224551. The reversal of 7224528 is 8254227.

It is a junction number, because it is equal to n+sod(n) for n = 7224495 and 7224504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7224521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133 + ... + 3803.

Almost surely, 2^7224528 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 7224528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9561888).

7224528 is an abundant number, since it is smaller than the sum of its proper divisors (11899248).

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

7224528 is a wasteful number, since it uses less digits than its factorization.

7224528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3723 (or 3717 counting only the distinct ones).

The product of its digits is 8960, while the sum is 30.

The square root of 7224528 is about 2687.8482100000. The cubic root of 7224528 is about 193.3169017611.

The spelling of 7224528 in words is "seven million, two hundred twenty-four thousand, five hundred twenty-eight".