726742448444 has 24 divisors (see below), whose sum is σ = 1274207407200. Its totient is φ = 362683468800.

The previous prime is 726742448437. The next prime is 726742448461. The reversal of 726742448444 is 444844247627.

It is a happy number.

It is a super-2 number, since 2×726742448444² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 726742448444.

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, 11216012 + ... + 11280620.

It is an arithmetic number, because the mean of its divisors is an integer number (53091975300).

Almost surely, 2^726742448444 is an apocalyptic number.

It is an amenable number.

726742448444 is a deficient number, since it is larger than the sum of its proper divisors (547464958756).

726742448444 is a wasteful number, since it uses less digits than its factorization.

726742448444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69893 (or 69891 counting only the distinct ones).

The product of its digits is 38535168, while the sum is 56.

The spelling of 726742448444 in words is "seven hundred twenty-six billion, seven hundred forty-two million, four hundred forty-eight thousand, four hundred forty-four".