728375227 has 4 divisors (see below), whose sum is σ = 733199056. Its totient is φ = 723551400.

The previous prime is 728375189. The next prime is 728375233. The reversal of 728375227 is 722573827.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 722573827 = 263 ⋅2747429.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-728375227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728375267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2411688 + ... + 2411989.

It is an arithmetic number, because the mean of its divisors is an integer number (183299764).

Almost surely, 2^728375227 is an apocalyptic number.

728375227 is a deficient number, since it is larger than the sum of its proper divisors (4823829).

728375227 is a wasteful number, since it uses less digits than its factorization.

728375227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823828.

The product of its digits is 329280, while the sum is 43.

The square root of 728375227 is about 26988.4276496427. The cubic root of 728375227 is about 899.7428182850.

The spelling of 728375227 in words is "seven hundred twenty-eight million, three hundred seventy-five thousand, two hundred twenty-seven".