206791830 has 96 divisors (see below), whose sum is σ = 624656448. Its totient is φ = 46483200.

The previous prime is 206791817. The next prime is 206791841. The reversal of 206791830 is 38197602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 35740 + ... + 41120.

It is an arithmetic number, because the mean of its divisors is an integer number (6506838).

Almost surely, 2^206791830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206791830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312328224).

206791830 is an abundant number, since it is smaller than the sum of its proper divisors (417864618).

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

206791830 is a wasteful number, since it uses less digits than its factorization.

206791830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462 (or 5459 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 206791830 is about 14380.2583426029. The cubic root of 206791830 is about 591.3498062259.

The spelling of 206791830 in words is "two hundred six million, seven hundred ninety-one thousand, eight hundred thirty".