209285426 has 16 divisors (see below), whose sum is σ = 359126784. Its totient is φ = 89605824.

The previous prime is 209285387. The next prime is 209285467. The reversal of 209285426 is 624582902.

209285426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 209285426.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8666 + ... + 22218.

It is an arithmetic number, because the mean of its divisors is an integer number (22445424).

Almost surely, 2^209285426 is an apocalyptic number.

209285426 is a deficient number, since it is larger than the sum of its proper divisors (149841358).

209285426 is a wasteful number, since it uses less digits than its factorization.

209285426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14665.

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 209285426 is about 14466.7005913581. The cubic root of 209285426 is about 593.7172430904.

The spelling of 209285426 in words is "two hundred nine million, two hundred eighty-five thousand, four hundred twenty-six".