73224522 has 72 divisors (see below), whose sum is σ = 187719012. Its totient is φ = 20563200.

The previous prime is 73224521. The next prime is 73224523. The reversal of 73224522 is 22542237.

It is an interprime number because it is at equal distance from previous prime (73224521) and next prime (73224523).

It can be written as a sum of positive squares in 2 ways, for example, as 57471561 + 15752961 = 7581^2 + 3969^2 .

It is not an unprimeable number, because it can be changed into a prime (73224521) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 53122 + ... + 54482.

Almost surely, 2^73224522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73224522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93859506).

73224522 is an abundant number, since it is smaller than the sum of its proper divisors (114494490).

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

73224522 is a wasteful number, since it uses less digits than its factorization.

73224522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444 (or 1434 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 73224522 is about 8557.1328142083. The cubic root of 73224522 is about 418.3619530727.

Adding to 73224522 its reverse (22542237), we get a palindrome (95766759).

The spelling of 73224522 in words is "seventy-three million, two hundred twenty-four thousand, five hundred twenty-two".