209268426 has 8 divisors (see below), whose sum is σ = 418536864. Its totient is φ = 69756140.

The previous prime is 209268391. The next prime is 209268431. The reversal of 209268426 is 624862902.

It is a sphenic number, since it is the product of 3 distinct primes.

209268426 is an admirable 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, 17439030 + ... + 17439041.

It is an arithmetic number, because the mean of its divisors is an integer number (52317108).

Almost surely, 2^209268426 is an apocalyptic number.

209268426 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

209268426 is a wasteful number, since it uses less digits than its factorization.

209268426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34878076.

The product of its (nonzero) digits is 82944, while the sum is 39.

The square root of 209268426 is about 14466.1130232001. The cubic root of 209268426 is about 593.7011670125.

The spelling of 209268426 in words is "two hundred nine million, two hundred sixty-eight thousand, four hundred twenty-six".