722424 has 32 divisors (see below), whose sum is σ = 1866240. Its totient is φ = 232800.

The previous prime is 722417. The next prime is 722431. The reversal of 722424 is 424227.

722424 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (722417) and next prime (722431).

722424 is a modest number, since divided by 2424 gives 72 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 722424.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259 + ... + 1229.

It is an arithmetic number, because the mean of its divisors is an integer number (58320).

2⁷²²⁴²⁴ 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 722424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933120).

722424 is an abundant number, since it is smaller than the sum of its proper divisors (1143816).

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

722424 is a wasteful number, since it uses less digits than its factorization.

722424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011 (or 1007 counting only the distinct ones).

The product of its digits is 896, while the sum is 21.

The square root of 722424 is about 849.9552929419. The cubic root of 722424 is about 89.7285649056.

The spelling of 722424 in words is "seven hundred twenty-two thousand, four hundred twenty-four", and thus it is an iban number.