722384 has 40 divisors (see below), whose sum is σ = 1583232. Its totient is φ = 316800.

The previous prime is 722377. The next prime is 722389. The reversal of 722384 is 483227.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (722389) 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, 4709 + ... + 4859.

2⁷²²³⁸⁴ 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 722384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (791616).

722384 is an abundant number, since it is smaller than the sum of its proper divisors (860848).

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

722384 is a wasteful number, since it uses less digits than its factorization.

722384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195 (or 189 counting only the distinct ones).

The product of its digits is 2688, while the sum is 26.

The square root of 722384 is about 849.9317619668. The cubic root of 722384 is about 89.7269088103.

The spelling of 722384 in words is "seven hundred twenty-two thousand, three hundred eighty-four".