723228 has 24 divisors (see below), whose sum is σ = 1841280. Its totient is φ = 219120.

The previous prime is 723227. The next prime is 723257. The reversal of 723228 is 822327.

It is a junction number, because it is equal to n+sod(n) for n = 723198 and 723207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723221) 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, 2608 + ... + 2871.

It is an arithmetic number, because the mean of its divisors is an integer number (76720).

2⁷²³²²⁸ is an apocalyptic number.

It is an amenable number.

723228 is an abundant number, since it is smaller than the sum of its proper divisors (1118052).

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

723228 is a wasteful number, since it uses less digits than its factorization.

723228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5497 (or 5495 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 723228 is about 850.4281274746. The cubic root of 723228 is about 89.7618394646.

Subtracting 723228 from its reverse (822327), we obtain a palindrome (99099).

It can be divided in two parts, 7232 and 28, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 723228 in words is "seven hundred twenty-three thousand, two hundred twenty-eight".