2172046305 has 48 divisors (see below), whose sum is σ = 4105325376. Its totient is φ = 972092160.

The previous prime is 2172046291. The next prime is 2172046369. The reversal of 2172046305 is 5036402712.

2172046305 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2172046305 - 2⁵ = 2172046273 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11062 + ... + 66831.

It is an arithmetic number, because the mean of its divisors is an integer number (85527612).

Almost surely, 2^2172046305 is an apocalyptic number.

It is an amenable number.

2172046305 is a deficient number, since it is larger than the sum of its proper divisors (1933279071).

2172046305 is a wasteful number, since it uses less digits than its factorization.

2172046305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77938 (or 77925 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 2172046305 is about 46605.2175727139. The cubic root of 2172046305 is about 1295.0594139991.

The spelling of 2172046305 in words is "two billion, one hundred seventy-two million, forty-six thousand, three hundred five".