73207128 has 32 divisors (see below), whose sum is σ = 185079600. Its totient is φ = 24127488.

The previous prime is 73207111. The next prime is 73207129. The reversal of 73207128 is 82170237.

It is a junction number, because it is equal to n+sod(n) for n = 73207095 and 73207104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73207129) 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, 15001 + ... + 19272.

Almost surely, 2^73207128 is an apocalyptic number.

It is an amenable number.

73207128 is an abundant number, since it is smaller than the sum of its proper divisors (111872472).

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

73207128 is a wasteful number, since it uses less digits than its factorization.

73207128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34371 (or 34367 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 73207128 is about 8556.1164087453. The cubic root of 73207128 is about 418.3288240794.

The spelling of 73207128 in words is "seventy-three million, two hundred seven thousand, one hundred twenty-eight".