722245738 has 16 divisors (see below), whose sum is σ = 1088933760. Its totient is φ = 359273376.

The previous prime is 722245703. The next prime is 722245739. The reversal of 722245738 is 837542227.

It is a self number, because there is not a number n which added to its sum of digits gives 722245738.

It is not an unprimeable number, because it can be changed into a prime (722245739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377781 + ... + 379687.

It is an arithmetic number, because the mean of its divisors is an integer number (68058360).

Almost surely, 2^722245738 is an apocalyptic number.

722245738 is a deficient number, since it is larger than the sum of its proper divisors (366688022).

722245738 is a wasteful number, since it uses less digits than its factorization.

722245738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2781.

The product of its digits is 188160, while the sum is 40.

The square root of 722245738 is about 26874.6300067554. The cubic root of 722245738 is about 897.2118396344.

The spelling of 722245738 in words is "seven hundred twenty-two million, two hundred forty-five thousand, seven hundred thirty-eight".