7224516 has 72 divisors (see below), whose sum is σ = 20180160. Its totient is φ = 2165184.

The previous prime is 7224499. The next prime is 7224517. The reversal of 7224516 is 6154227.

Its product of digits (3360) is a multiple of the sum of its prime divisors (420).

It is a self number, because there is not a number n which added to its sum of digits gives 7224516.

It is not an unprimeable number, because it can be changed into a prime (7224517) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19945 + ... + 20303.

It is an arithmetic number, because the mean of its divisors is an integer number (280280).

Almost surely, 2^7224516 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 7224516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10090080).

7224516 is an abundant number, since it is smaller than the sum of its proper divisors (12955644).

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

7224516 is a wasteful number, since it uses less digits than its factorization.

7224516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425 (or 420 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 7224516 is about 2687.8459777301. The cubic root of 7224516 is about 193.3167947274.

The spelling of 7224516 in words is "seven million, two hundred twenty-four thousand, five hundred sixteen".