208133340 has 24 divisors (see below), whose sum is σ = 582773520. Its totient is φ = 55502208.

The previous prime is 208133339. The next prime is 208133357. The reversal of 208133340 is 43331802.

It is a self number, because there is not a number n which added to its sum of digits gives 208133340.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1734385 + ... + 1734504.

It is an arithmetic number, because the mean of its divisors is an integer number (24282230).

Almost surely, 2^208133340 is an apocalyptic number.

208133340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208133340 is an abundant number, since it is smaller than the sum of its proper divisors (374640180).

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

208133340 is a wasteful number, since it uses less digits than its factorization.

208133340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468901 (or 3468899 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 208133340 is about 14426.8270939940. The cubic root of 208133340 is about 592.6257953628.

The spelling of 208133340 in words is "two hundred eight million, one hundred thirty-three thousand, three hundred forty".