7522224 has 40 divisors (see below), whose sum is σ = 19730880. Its totient is φ = 2468928.

The previous prime is 7522217. The next prime is 7522231. The reversal of 7522224 is 4222257.

It is an interprime number because it is at equal distance from previous prime (7522217) and next prime (7522231).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 7522194 and 7522203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047 + ... + 4385.

It is an arithmetic number, because the mean of its divisors is an integer number (493272).

Almost surely, 2^7522224 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 7522224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9865440).

7522224 is an abundant number, since it is smaller than the sum of its proper divisors (12208656).

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

7522224 is a wasteful number, since it uses less digits than its factorization.

7522224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417 (or 2411 counting only the distinct ones).

The product of its digits is 2240, while the sum is 24.

The square root of 7522224 is about 2742.6673148598. The cubic root of 7522224 is about 195.9365336648.

The spelling of 7522224 in words is "seven million, five hundred twenty-two thousand, two hundred twenty-four".