7257224 has 32 divisors (see below), whose sum is σ = 15133440. Its totient is φ = 3240000.

The previous prime is 7257179. The next prime is 7257227. The reversal of 7257224 is 4227527.

It is not an unprimeable number, because it can be changed into a prime (7257227) 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, 2099 + ... + 4349.

It is an arithmetic number, because the mean of its divisors is an integer number (472920).

Almost surely, 2^7257224 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 7257224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7566720).

7257224 is an abundant number, since it is smaller than the sum of its proper divisors (7876216).

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

7257224 is a wasteful number, since it uses less digits than its factorization.

7257224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301 (or 2297 counting only the distinct ones).

The product of its digits is 7840, while the sum is 29.

The square root of 7257224 is about 2693.9235326935. The cubic root of 7257224 is about 193.6080939402.

The spelling of 7257224 in words is "seven million, two hundred fifty-seven thousand, two hundred twenty-four".