722944 has 24 divisors (see below), whose sum is σ = 1449630. Its totient is φ = 360448.

The previous prime is 722933. The next prime is 722963. The reversal of 722944 is 449227.

It can be written as a sum of positive squares in only one way, i.e., 640000 + 82944 = 800^2 + 288^2 .

It is a d-powerful number, because it can be written as 7³ + 2¹⁷ + 9⁵ + 2¹⁹ + 4⁶ + 4⁶ .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1872 + ... + 2224.

2⁷²²⁹⁴⁴ 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 722944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (724815).

722944 is an abundant number, since it is smaller than the sum of its proper divisors (726686).

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

722944 is an equidigital number, since it uses as much as digits as its factorization.

722944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 355 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 722944 is about 850.2611363575. The cubic root of 722944 is about 89.7500885829.

The spelling of 722944 in words is "seven hundred twenty-two thousand, nine hundred forty-four".