7072211728 has 10 divisors (see below), whose sum is σ = 13702410254. Its totient is φ = 3536105856.

The previous prime is 7072211723. The next prime is 7072211737. The reversal of 7072211728 is 8271122707.

It can be written as a sum of positive squares in only one way, i.e., 4439290384 + 2632921344 = 66628^2 + 51312^2 .

It is not an unprimeable number, because it can be changed into a prime (7072211723) 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 as a sum of consecutive naturals, namely, 221006601 + ... + 221006632.

Almost surely, 2^7072211728 is an apocalyptic number.

It is an amenable number.

7072211728 is a deficient number, since it is larger than the sum of its proper divisors (6630198526).

7072211728 is a wasteful number, since it uses less digits than its factorization.

7072211728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442013241 (or 442013235 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 37.

The square root of 7072211728 is about 84096.4430163369. The cubic root of 7072211728 is about 1919.4866002892.

The spelling of 7072211728 in words is "seven billion, seventy-two million, two hundred eleven thousand, seven hundred twenty-eight".