2171317028 has 24 divisors (see below), whose sum is σ = 3905577984. Its totient is φ = 1055484000.

The previous prime is 2171317003. The next prime is 2171317123. The reversal of 2171317028 is 8207131712.

It is a junction number, because it is equal to n+sod(n) for n = 2171316985 and 2171317003.

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, 209693 + ... + 219803.

It is an arithmetic number, because the mean of its divisors is an integer number (162732416).

Almost surely, 2^2171317028 is an apocalyptic number.

It is an amenable number.

2171317028 is a deficient number, since it is larger than the sum of its proper divisors (1734260956).

2171317028 is a wasteful number, since it uses less digits than its factorization.

2171317028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11603 (or 11601 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 2171317028 is about 46597.3929313647. The cubic root of 2171317028 is about 1294.9144565667.

The spelling of 2171317028 in words is "two billion, one hundred seventy-one million, three hundred seventeen thousand, twenty-eight".