209426030 has 16 divisors (see below), whose sum is σ = 411236784. Its totient is φ = 76154880.

The previous prime is 209426011. The next prime is 209426033. The reversal of 209426030 is 30624902.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209426033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 951827 + ... + 952046.

It is an arithmetic number, because the mean of its divisors is an integer number (25702299).

Almost surely, 2^209426030 is an apocalyptic number.

209426030 is a deficient number, since it is larger than the sum of its proper divisors (201810754).

209426030 is a wasteful number, since it uses less digits than its factorization.

209426030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1903891.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 209426030 is about 14471.5593492892. The cubic root of 209426030 is about 593.8501721294.

The spelling of 209426030 in words is "two hundred nine million, four hundred twenty-six thousand, thirty".