73224520 has 16 divisors (see below), whose sum is σ = 164755260. Its totient is φ = 29289792.

The previous prime is 73224467. The next prime is 73224521. The reversal of 73224520 is 2542237.

It can be written as a sum of positive squares in 2 ways, for example, as 65966884 + 7257636 = 8122^2 + 2694^2 .

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

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915267 + ... + 915346.

Almost surely, 2^73224520 is an apocalyptic number.

It is an amenable number.

73224520 is an abundant number, since it is smaller than the sum of its proper divisors (91530740).

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

73224520 is a wasteful number, since it uses less digits than its factorization.

73224520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830624 (or 1830620 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 73224520 is about 8557.1326973467. The cubic root of 73224520 is about 418.3619492637.

Adding to 73224520 its reverse (2542237), we get a palindrome (75766757).

It can be divided in two parts, 732 and 24520, that added together give a palindrome (25252).

The spelling of 73224520 in words is "seventy-three million, two hundred twenty-four thousand, five hundred twenty".