2175720328 has 16 divisors (see below), whose sum is σ = 4256844480. Its totient is φ = 1040561808.

The previous prime is 2175720311. The next prime is 2175720329. The reversal of 2175720328 is 8230275712.

It is not an unprimeable number, because it can be changed into a prime (2175720329) 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, 5912100 + ... + 5912467.

It is an arithmetic number, because the mean of its divisors is an integer number (266052780).

Almost surely, 2^2175720328 is an apocalyptic number.

It is an amenable number.

2175720328 is a deficient number, since it is larger than the sum of its proper divisors (2081124152).

2175720328 is a wasteful number, since it uses less digits than its factorization.

2175720328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11824596 (or 11824592 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 2175720328 is about 46644.6173529165. The cubic root of 2175720328 is about 1295.7892016672.

The spelling of 2175720328 in words is "two billion, one hundred seventy-five million, seven hundred twenty thousand, three hundred twenty-eight".