2162178 has 12 divisors (see below), whose sum is σ = 4684758. Its totient is φ = 720720.

The previous prime is 2162177. The next prime is 2162183. The reversal of 2162178 is 8712612.

It can be written as a sum of positive squares in only one way, i.e., 1595169 + 567009 = 1263^2 + 753^2 .

It is not an unprimeable number, because it can be changed into a prime (2162177) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60043 + ... + 60078.

2^2162178 is an apocalyptic number.

2162178 is an abundant number, since it is smaller than the sum of its proper divisors (2522580).

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

2162178 is a wasteful number, since it uses less digits than its factorization.

2162178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120129 (or 120126 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 2162178 is about 1470.4346296249. The cubic root of 2162178 is about 129.3095145731.

It can be divided in two parts, 216217 and 8, that added together give a square (216225 = 465²).

The spelling of 2162178 in words is "two million, one hundred sixty-two thousand, one hundred seventy-eight".