2180026 has 4 divisors (see below), whose sum is σ = 3270042. Its totient is φ = 1090012.

The previous prime is 2180021. The next prime is 2180027. The reversal of 2180026 is 6200812.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2117025 + 63001 = 1455^2 + 251^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2179985 and 2180012.

It is not an unprimeable number, because it can be changed into a prime (2180021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545005 + ... + 545008.

2^2180026 is an apocalyptic number.

2180026 is a deficient number, since it is larger than the sum of its proper divisors (1090016).

2180026 is a wasteful number, since it uses less digits than its factorization.

2180026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090015.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2180026 is about 1476.4911107081. The cubic root of 2180026 is about 129.6643411785.

Adding to 2180026 its reverse (6200812), we get a palindrome (8380838).

The spelling of 2180026 in words is "two million, one hundred eighty thousand, twenty-six".