728326227 has 4 divisors (see below), whose sum is σ = 971101640. Its totient is φ = 485550816.

The previous prime is 728326199. The next prime is 728326229. The reversal of 728326227 is 722623827.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 728326227 - 2⁷ = 728326099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728326229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121387702 + ... + 121387707.

It is an arithmetic number, because the mean of its divisors is an integer number (242775410).

Almost surely, 2^728326227 is an apocalyptic number.

728326227 is a deficient number, since it is larger than the sum of its proper divisors (242775413).

728326227 is a wasteful number, since it uses less digits than its factorization.

728326227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242775412.

The product of its digits is 112896, while the sum is 39.

The square root of 728326227 is about 26987.5198378806. The cubic root of 728326227 is about 899.7226416941.

The spelling of 728326227 in words is "seven hundred twenty-eight million, three hundred twenty-six thousand, two hundred twenty-seven".