728451227 has 8 divisors (see below), whose sum is σ = 855016416. Its totient is φ = 607511232.

The previous prime is 728451221. The next prime is 728451247. The reversal of 728451227 is 722154827.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 728451227 - 2⁴ = 728451211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (728451221) 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, 1406018 + ... + 1406535.

It is an arithmetic number, because the mean of its divisors is an integer number (106877052).

Almost surely, 2^728451227 is an apocalyptic number.

728451227 is a deficient number, since it is larger than the sum of its proper divisors (126565189).

728451227 is a wasteful number, since it uses less digits than its factorization.

728451227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812597.

The product of its digits is 62720, while the sum is 38.

The square root of 728451227 is about 26989.8356238048. The cubic root of 728451227 is about 899.7741107990.

The spelling of 728451227 in words is "seven hundred twenty-eight million, four hundred fifty-one thousand, two hundred twenty-seven".