73530628 has 6 divisors (see below), whose sum is σ = 128678606. Its totient is φ = 36765312.

The previous prime is 73530623. The next prime is 73530659. The reversal of 73530628 is 82603537.

It can be written as a sum of positive squares in only one way, i.e., 73307844 + 222784 = 8562^2 + 472^2 .

It is a junction number, because it is equal to n+sod(n) for n = 73530593 and 73530602.

It is not an unprimeable number, because it can be changed into a prime (73530623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9191325 + ... + 9191332.

Almost surely, 2^73530628 is an apocalyptic number.

It is an amenable number.

73530628 is a deficient number, since it is larger than the sum of its proper divisors (55147978).

73530628 is a wasteful number, since it uses less digits than its factorization.

73530628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18382661 (or 18382659 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 73530628 is about 8575.0001749271. Note that the first 3 decimals coincide. The cubic root of 73530628 is about 418.9441126333.

The spelling of 73530628 in words is "seventy-three million, five hundred thirty thousand, six hundred twenty-eight".