213306026 has 16 divisors (see below), whose sum is σ = 333953928. Its totient is φ = 102086400.

The previous prime is 213306013. The next prime is 213306029. The reversal of 213306026 is 620603312.

It is a Cunningham number, because it is equal to 14605²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 153784801 + 59521225 = 12401^2 + 7715^2 .

It is a junction number, because it is equal to n+sod(n) for n = 213305992 and 213306010.

It is not an unprimeable number, because it can be changed into a prime (213306029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20195 + ... + 28886.

Almost surely, 2^213306026 is an apocalyptic number.

213306026 is a deficient number, since it is larger than the sum of its proper divisors (120647902).

213306026 is a wasteful number, since it uses less digits than its factorization.

213306026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49177.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 213306026 is about 14605.0000342349. Note that the first 4 decimals coincide. The cubic root of 213306026 is about 597.4951369503.

Adding to 213306026 its reverse (620603312), we get a palindrome (833909338).

The spelling of 213306026 in words is "two hundred thirteen million, three hundred six thousand, twenty-six".