73125320 has 32 divisors (see below), whose sum is σ = 168982200. Its totient is φ = 28459008.

The previous prime is 73125301. The next prime is 73125329. The reversal of 73125320 is 2352137.

It can be written as a sum of positive squares in 4 ways, for example, as 66945124 + 6180196 = 8182^2 + 2486^2 .

It is not an unprimeable number, because it can be changed into a prime (73125329) 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, 23225 + ... + 26184.

Almost surely, 2^73125320 is an apocalyptic number.

It is an amenable number.

73125320 is an abundant number, since it is smaller than the sum of its proper divisors (95856880).

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

73125320 is a wasteful number, since it uses less digits than its factorization.

73125320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49457 (or 49453 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 73125320 is about 8551.3343987941. The cubic root of 73125320 is about 418.1729403511.

Adding to 73125320 its reverse (2352137), we get a palindrome (75477457).

The spelling of 73125320 in words is "seventy-three million, one hundred twenty-five thousand, three hundred twenty".