2170422156 has 48 divisors (see below), whose sum is σ = 5816921600. Its totient is φ = 616999680.

The previous prime is 2170422139. The next prime is 2170422157. The reversal of 2170422156 is 6512240712.

It is not an unprimeable number, because it can be changed into a prime (2170422157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48205 + ... + 81636.

Almost surely, 2^2170422156 is an apocalyptic number.

It is an amenable number.

2170422156 is an abundant number, since it is smaller than the sum of its proper divisors (3646499444).

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

2170422156 is a wasteful number, since it uses less digits than its factorization.

2170422156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130054 (or 130052 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 2170422156 is about 46587.7897737165. The cubic root of 2170422156 is about 1294.7365396770.

Adding to 2170422156 its reverse (6512240712), we get a palindrome (8682662868).

The spelling of 2170422156 in words is "two billion, one hundred seventy million, four hundred twenty-two thousand, one hundred fifty-six".