212326506 has 36 divisors (see below), whose sum is σ = 535151682. Its totient is φ = 60664464.

The previous prime is 212326489. The next prime is 212326507. The reversal of 212326506 is 605623212.

212326506 is a `hidden beast` number, since 2 + 1 + 2 + 3 + 2 + 650 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 189200025 + 23126481 = 13755^2 + 4809^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212326506.

It is not an unprimeable number, because it can be changed into a prime (212326507) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 119485 + ... + 121248.

Almost surely, 2^212326506 is an apocalyptic number.

212326506 is an abundant number, since it is smaller than the sum of its proper divisors (322825176).

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

212326506 is a wasteful number, since it uses less digits than its factorization.

212326506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240755 (or 240745 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 212326506 is about 14571.4277268907. The cubic root of 212326506 is about 596.5791500422.

Adding to 212326506 its reverse (605623212), we get a palindrome (817949718).

The spelling of 212326506 in words is "two hundred twelve million, three hundred twenty-six thousand, five hundred six".