73020320 has 24 divisors (see below), whose sum is σ = 172510884. Its totient is φ = 29208064.

The previous prime is 73020313. The next prime is 73020323. The reversal of 73020320 is 2302037.

It can be written as a sum of positive squares in 2 ways, for example, as 60031504 + 12988816 = 7748^2 + 3604^2 .

It is not an unprimeable number, because it can be changed into a prime (73020323) 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, 228029 + ... + 228348.

Almost surely, 2^73020320 is an apocalyptic number.

It is an amenable number.

73020320 is an abundant number, since it is smaller than the sum of its proper divisors (99490564).

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

73020320 is a wasteful number, since it uses less digits than its factorization.

73020320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456392 (or 456384 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 73020320 is about 8545.1928006336. The cubic root of 73020320 is about 417.9726942016.

Adding to 73020320 its reverse (2302037), we get a palindrome (75322357).

The spelling of 73020320 in words is "seventy-three million, twenty thousand, three hundred twenty".