209424030 has 64 divisors (see below), whose sum is σ = 511522560. Its totient is φ = 54867456.

The previous prime is 209424013. The next prime is 209424043. The reversal of 209424030 is 30424902.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 552381 + ... + 552759.

It is an arithmetic number, because the mean of its divisors is an integer number (7992540).

Almost surely, 2^209424030 is an apocalyptic number.

209424030 is an abundant number, since it is smaller than the sum of its proper divisors (302098530).

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

209424030 is a wasteful number, since it uses less digits than its factorization.

209424030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 209424030 is about 14471.4902480705. The cubic root of 209424030 is about 593.8482817179.

Adding to 209424030 its reverse (30424902), we get a palindrome (239848932).

The spelling of 209424030 in words is "two hundred nine million, four hundred twenty-four thousand, thirty".