208193380 has 24 divisors (see below), whose sum is σ = 439895232. Its totient is φ = 82765152.

The previous prime is 208193351. The next prime is 208193411. The reversal of 208193380 is 83391802.

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 7 ways as a sum of consecutive naturals, for example, 28672 + ... + 35191.

It is an arithmetic number, because the mean of its divisors is an integer number (18328968).

Almost surely, 2^208193380 is an apocalyptic number.

208193380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208193380 is an abundant number, since it is smaller than the sum of its proper divisors (231701852).

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

208193380 is a wasteful number, since it uses less digits than its factorization.

208193380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64035 (or 64033 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 208193380 is about 14428.9077895730. The cubic root of 208193380 is about 592.6827745922.

The spelling of 208193380 in words is "two hundred eight million, one hundred ninety-three thousand, three hundred eighty".