209930304 has 112 divisors (see below), whose sum is σ = 590702400. Its totient is φ = 65673216.

The previous prime is 209930299. The next prime is 209930321. The reversal of 209930304 is 403039902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205507 + ... + 206525.

Almost surely, 2^209930304 is an apocalyptic number.

209930304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 209930304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295351200).

209930304 is an abundant number, since it is smaller than the sum of its proper divisors (380772096).

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

209930304 is a wasteful number, since it uses less digits than its factorization.

209930304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100 (or 1090 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 209930304 is about 14488.9718061704. The cubic root of 209930304 is about 594.3264312410.

The spelling of 209930304 in words is "two hundred nine million, nine hundred thirty thousand, three hundred four".