209264216 has 16 divisors (see below), whose sum is σ = 448423440. Its totient is φ = 89684640.

The previous prime is 209264207. The next prime is 209264243. The reversal of 209264216 is 612462902.

209264216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1868375 + ... + 1868486.

It is an arithmetic number, because the mean of its divisors is an integer number (28026465).

Almost surely, 2^209264216 is an apocalyptic number.

It is an amenable number.

209264216 is an abundant number, since it is smaller than the sum of its proper divisors (239159224).

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

209264216 is a wasteful number, since it uses less digits than its factorization.

209264216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736874 (or 3736870 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 209264216 is about 14465.9675099870. The cubic root of 209264216 is about 593.6971856846.

The spelling of 209264216 in words is "two hundred nine million, two hundred sixty-four thousand, two hundred sixteen".