2175720234 has 16 divisors (see below), whose sum is σ = 4352491488. Its totient is φ = 725064912.

The previous prime is 2175720223. The next prime is 2175720241. The reversal of 2175720234 is 4320275712.

2175720234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 2175720195 and 2175720204.

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, 15472 + ... + 67755.

It is an arithmetic number, because the mean of its divisors is an integer number (272030718).

Almost surely, 2^2175720234 is an apocalyptic number.

2175720234 is an abundant number, since it is smaller than the sum of its proper divisors (2176771254).

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

2175720234 is a wasteful number, since it uses less digits than its factorization.

2175720234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87589.

The product of its (nonzero) digits is 23520, while the sum is 33.

The square root of 2175720234 is about 46644.6163452976. The cubic root of 2175720234 is about 1295.7891830061.

Adding to 2175720234 its reverse (4320275712), we get a palindrome (6495995946).

The spelling of 2175720234 in words is "two billion, one hundred seventy-five million, seven hundred twenty thousand, two hundred thirty-four".