73216128 has 32 divisors (see below), whose sum is σ = 194481360. Its totient is φ = 24405248.

The previous prime is 73216111. The next prime is 73216147. The reversal of 73216128 is 82161237.

It is a tau number, because it is divible by the number of its divisors (32).

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 73216095 and 73216104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94950 + ... + 95717.

Almost surely, 2^73216128 is an apocalyptic number.

It is an amenable number.

73216128 is an abundant number, since it is smaller than the sum of its proper divisors (121265232).

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

73216128 is a wasteful number, since it uses less digits than its factorization.

73216128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190684 (or 190672 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 73216128 is about 8556.6423321301. The cubic root of 73216128 is about 418.3459663316.

The spelling of 73216128 in words is "seventy-three million, two hundred sixteen thousand, one hundred twenty-eight".