2172001724 has 12 divisors (see below), whose sum is σ = 3889398744. Its totient is φ = 1060744944.

The previous prime is 2172001721. The next prime is 2172001759. The reversal of 2172001724 is 4271002712.

2172001724 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 = 2172001693 and 2172001702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172001721) 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, 6313787 + ... + 6314130.

It is an arithmetic number, because the mean of its divisors is an integer number (324116562).

Almost surely, 2^2172001724 is an apocalyptic number.

It is an amenable number.

2172001724 is a deficient number, since it is larger than the sum of its proper divisors (1717397020).

2172001724 is a wasteful number, since it uses less digits than its factorization.

2172001724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12627964 (or 12627962 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 2172001724 is about 46604.7392869009. The cubic root of 2172001724 is about 1295.0505536234.

The spelling of 2172001724 in words is "two billion, one hundred seventy-two million, one thousand, seven hundred twenty-four".