209300028 has 48 divisors (see below), whose sum is σ = 567297024. Its totient is φ = 58818240.

The previous prime is 209300011. The next prime is 209300033. The reversal of 209300028 is 820003902.

It is a junction number, because it is equal to n+sod(n) for n = 209299980 and 209300007.

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, 15300 + ... + 25547.

It is an arithmetic number, because the mean of its divisors is an integer number (11818688).

Almost surely, 2^209300028 is an apocalyptic number.

209300028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

209300028 is an abundant number, since it is smaller than the sum of its proper divisors (357996996).

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

209300028 is a wasteful number, since it uses less digits than its factorization.

209300028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40922 (or 40920 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 209300028 is about 14467.2052587913. The cubic root of 209300028 is about 593.7310508006.

The spelling of 209300028 in words is "two hundred nine million, three hundred thousand, twenty-eight".