724480 has 40 divisors (see below), whose sum is σ = 1743192. Its totient is φ = 288768.

The previous prime is 724469. The next prime is 724481. The reversal of 724480 is 84427.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (724481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2419 + ... + 2701.

2⁷²⁴⁴⁸⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 724480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (871596).

724480 is an abundant number, since it is smaller than the sum of its proper divisors (1018712).

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

724480 is an equidigital number, since it uses as much as digits as its factorization.

724480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 724480 is about 851.1639090093. The cubic root of 724480 is about 89.8136060058.

The spelling of 724480 in words is "seven hundred twenty-four thousand, four hundred eighty".