731228 has 12 divisors (see below), whose sum is σ = 1321152.
Its totient is φ = 353760.
The previous prime is 731219. The next prime is 731233. The reversal of 731228 is 822137.
It is a congruent number.
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, 2825 + ... + 3072.
It is an arithmetic number, because the mean of its divisors is an integer number (110096).
2731228 is an apocalyptic number.
It is an amenable number.
731228 is a deficient number, since it is larger than the sum of its proper divisors (589924).
731228 is a wasteful number, since it uses less digits than its factorization.
731228 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 5932 (or 5930 counting only the distinct ones).
The product of its digits is 672, while the sum is 23.
The square root of 731228 is about 855.1187052100.
The cubic root of 731228 is about 90.0915939950.
Subtracting 731228 from its reverse (822137), we obtain a palindrome (90909).
It can be divided in two parts, 731 and 228, that added together give a palindrome (959).
The spelling of 731228 in words is "seven hundred thirty-one thousand, two hundred twenty-eight".