2175720320 has 32 divisors (see below), whose sum is σ = 5201332920. Its totient is φ = 870287872.

The previous prime is 2175720311. The next prime is 2175720329. The reversal of 2175720320 is 230275712.

It is an interprime number because it is at equal distance from previous prime (2175720311) and next prime (2175720329).

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

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, 1699142 + ... + 1700421.

Almost surely, 2^2175720320 is an apocalyptic number.

2175720320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2175720320 is an abundant number, since it is smaller than the sum of its proper divisors (3025612600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2175720320 is an equidigital number, since it uses as much as digits as its factorization.

2175720320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399582 (or 3399570 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 2175720320 is about 46644.6172671617. The cubic root of 2175720320 is about 1295.7892000790.

The spelling of 2175720320 in words is "two billion, one hundred seventy-five million, seven hundred twenty thousand, three hundred twenty".