209200730830 has 48 divisors (see below), whose sum is σ = 471736167840. Its totient is φ = 66208580928.

The previous prime is 209200730807. The next prime is 209200730861. The reversal of 209200730830 is 38037002902.

It is a super-2 number, since 2×209200730830² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16414410 + ... + 16427149.

It is an arithmetic number, because the mean of its divisors is an integer number (9827836830).

Almost surely, 2^209200730830 is an apocalyptic number.

209200730830 is an abundant number, since it is smaller than the sum of its proper divisors (262535437010).

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

209200730830 is a wasteful number, since it uses less digits than its factorization.

209200730830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32841593 (or 32841586 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 209200730830 in words is "two hundred nine billion, two hundred million, seven hundred thirty thousand, eight hundred thirty".