216020026 has 4 divisors (see below), whose sum is σ = 324030042. Its totient is φ = 108010012.

The previous prime is 216020017. The next prime is 216020027. The reversal of 216020026 is 620020612.

216020026 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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., 144600625 + 71419401 = 12025^2 + 8451^2 .

It is a junction number, because it is equal to n+sod(n) for n = 216019985 and 216020012.

It is not an unprimeable number, because it can be changed into a prime (216020027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54005005 + ... + 54005008.

Almost surely, 2^216020026 is an apocalyptic number.

216020026 is a deficient number, since it is larger than the sum of its proper divisors (108010016).

216020026 is a wasteful number, since it uses less digits than its factorization.

216020026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108010015.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 216020026 is about 14697.6197392639. The cubic root of 216020026 is about 600.0185420196.

Adding to 216020026 its reverse (620020612), we get a palindrome (836040638).

The spelling of 216020026 in words is "two hundred sixteen million, twenty thousand, twenty-six".