723224 has 8 divisors (see below), whose sum is σ = 1356060. Its totient is φ = 361608.

The previous prime is 723221. The next prime is 723227. The reversal of 723224 is 422327.

It is a happy number.

723224 is nontrivially palindromic in base 15.

It is an interprime number because it is at equal distance from previous prime (723221) and next prime (723227).

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 723196 and 723205.

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 pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45194 + ... + 45209.

2⁷²³²²⁴ is an apocalyptic number.

It is an amenable number.

723224 is a deficient number, since it is larger than the sum of its proper divisors (632836).

723224 is a wasteful number, since it uses less digits than its factorization.

723224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90409 (or 90405 counting only the distinct ones).

The product of its digits is 672, while the sum is 20.

The square root of 723224 is about 850.4257757147. The cubic root of 723224 is about 89.7616739806.

The spelling of 723224 in words is "seven hundred twenty-three thousand, two hundred twenty-four", and thus it is an iban number.