726444 has 36 divisors (see below), whose sum is σ = 1945944. Its totient is φ = 227712.

The previous prime is 726431. The next prime is 726457. The reversal of 726444 is 444627.

726444 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 (726431) and next prime (726457).

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19 + ... + 1205.

It is an arithmetic number, because the mean of its divisors is an integer number (54054).

2⁷²⁶⁴⁴⁴ 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 726444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (972972).

726444 is an abundant number, since it is smaller than the sum of its proper divisors (1219500).

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

726444 is a wasteful number, since it uses less digits than its factorization.

726444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1209 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 726444 is about 852.3168424946. The cubic root of 726444 is about 89.8946916423.

The spelling of 726444 in words is "seven hundred twenty-six thousand, four hundred forty-four".