728040444 has 24 divisors (see below), whose sum is σ = 1740195408. Its totient is φ = 236760960.

The previous prime is 728040433. The next prime is 728040449. The reversal of 728040444 is 444040827.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728040449) 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, 739387 + ... + 740370.

It is an arithmetic number, because the mean of its divisors is an integer number (72508142).

Almost surely, 2^728040444 is an apocalyptic number.

It is an amenable number.

728040444 is an abundant number, since it is smaller than the sum of its proper divisors (1012154964).

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

728040444 is a wasteful number, since it uses less digits than its factorization.

728040444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479805 (or 1479803 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 33.

The square root of 728040444 is about 26982.2245932392. The cubic root of 728040444 is about 899.6049476059.

The spelling of 728040444 in words is "seven hundred twenty-eight million, forty thousand, four hundred forty-four".