7211728870 has 16 divisors (see below), whose sum is σ = 12984069600. Its totient is φ = 2884034304.

The previous prime is 7211728847. The next prime is 7211728871. The reversal of 7211728870 is 788271127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7211728871) 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, 34770 + ... + 125029.

It is an arithmetic number, because the mean of its divisors is an integer number (811504350).

Almost surely, 2^7211728870 is an apocalyptic number.

7211728870 is a deficient number, since it is larger than the sum of its proper divisors (5772340730).

7211728870 is a wasteful number, since it uses less digits than its factorization.

7211728870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164319.

The product of its (nonzero) digits is 87808, while the sum is 43.

The square root of 7211728870 is about 84921.8986481108. The cubic root of 7211728870 is about 1932.0267281015.

Adding to 7211728870 its reverse (788271127), we get a palindrome (7999999997).

The spelling of 7211728870 in words is "seven billion, two hundred eleven million, seven hundred twenty-eight thousand, eight hundred seventy".