723472 has 20 divisors (see below), whose sum is σ = 1418560. Its totient is φ = 357408.

The previous prime is 723467. The next prime is 723473. The reversal of 723472 is 274327.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (723473) by changing a digit.

723472 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1429 + ... + 1867.

It is an arithmetic number, because the mean of its divisors is an integer number (70928).

2⁷²³⁴⁷² is an apocalyptic number.

It is an amenable number.

723472 is a deficient number, since it is larger than the sum of its proper divisors (695088).

723472 is a wasteful number, since it uses less digits than its factorization.

723472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550 (or 544 counting only the distinct ones).

The product of its digits is 2352, while the sum is 25.

The square root of 723472 is about 850.5715725323. The cubic root of 723472 is about 89.7719328359.

Adding to 723472 its reverse (274327), we get a palindrome (997799).

The spelling of 723472 in words is "seven hundred twenty-three thousand, four hundred seventy-two", and thus it is an iban number.