209340352 has 28 divisors (see below), whose sum is σ = 447366136. Its totient is φ = 96618240.

The previous prime is 209340343. The next prime is 209340389. The reversal of 209340352 is 253043902.

It is a self number, because there is not a number n which added to its sum of digits gives 209340352.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124974 + ... + 126637.

It is an arithmetic number, because the mean of its divisors is an integer number (15977362).

Almost surely, 2^209340352 is an apocalyptic number.

It is an amenable number.

209340352 is an abundant number, since it is smaller than the sum of its proper divisors (238025784).

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

209340352 is a wasteful number, since it uses less digits than its factorization.

209340352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251636 (or 251626 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 209340352 is about 14468.5988264241. The cubic root of 209340352 is about 593.7691780029.

The spelling of 209340352 in words is "two hundred nine million, three hundred forty thousand, three hundred fifty-two".