209216010 has 16 divisors (see below), whose sum is σ = 502118496. Its totient is φ = 55790928.

The previous prime is 209215999. The next prime is 209216041. The reversal of 209216010 is 10612902.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3486904 + ... + 3486963.

It is an arithmetic number, because the mean of its divisors is an integer number (31382406).

Almost surely, 2^209216010 is an apocalyptic number.

209216010 is an abundant number, since it is smaller than the sum of its proper divisors (292902486).

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

209216010 is a wasteful number, since it uses less digits than its factorization.

209216010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6973877.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 209216010 is about 14464.3012275049. The cubic root of 209216010 is about 593.6515942548.

Adding to 209216010 its reverse (10612902), we get a palindrome (219828912).

The spelling of 209216010 in words is "two hundred nine million, two hundred sixteen thousand, ten".