6720130028 has 24 divisors (see below), whose sum is σ = 12228230784. Its totient is φ = 3227932800.

The previous prime is 6720130013. The next prime is 6720130033. The reversal of 6720130028 is 8200310276.

It is a happy 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, 180803 + ... + 214778.

It is an arithmetic number, because the mean of its divisors is an integer number (509509616).

Almost surely, 2^6720130028 is an apocalyptic number.

It is an amenable number.

6720130028 is a deficient number, since it is larger than the sum of its proper divisors (5508100756).

6720130028 is a wasteful number, since it uses less digits than its factorization.

6720130028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395753 (or 395751 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 6720130028 is about 81976.3992134322. The cubic root of 6720130028 is about 1887.0897633242.

The spelling of 6720130028 in words is "six billion, seven hundred twenty million, one hundred thirty thousand, twenty-eight".