720000044 has 12 divisors (see below), whose sum is σ = 1260189000. Its totient is φ = 359946048.

The previous prime is 719999999. The next prime is 720000049. The reversal of 720000044 is 440000027.

It is a junction number, because it is equal to n+sod(n) for n = 719999977 and 720000031.

It is not an unprimeable number, because it can be changed into a prime (720000049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40727 + ... + 55665.

It is an arithmetic number, because the mean of its divisors is an integer number (105015750).

Almost surely, 2^720000044 is an apocalyptic number.

It is an amenable number.

720000044 is a deficient number, since it is larger than the sum of its proper divisors (540188956).

720000044 is a wasteful number, since it uses less digits than its factorization.

720000044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26992 (or 26990 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 720000044 is about 26832.8165498891. The cubic root of 720000044 is about 896.2809675690.

Subtracting from 720000044 its sum of digits (17), we obtain a palindrome (720000027).

The spelling of 720000044 in words is "seven hundred twenty million, forty-four", and thus it is an aban number.