208920402 has 24 divisors (see below), whose sum is σ = 463189584. Its totient is φ = 68020344.

The previous prime is 208920401. The next prime is 208920421. The reversal of 208920402 is 204029802.

It is not an unprimeable number, because it can be changed into a prime (208920401) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 134188 + ... + 135735.

It is an arithmetic number, because the mean of its divisors is an integer number (19299566).

Almost surely, 2^208920402 is an apocalyptic number.

208920402 is an abundant number, since it is smaller than the sum of its proper divisors (254269182).

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

208920402 is a wasteful number, since it uses less digits than its factorization.

208920402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269974 (or 269971 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 208920402 is about 14454.0790782395. The cubic root of 208920402 is about 593.3718660186.

The spelling of 208920402 in words is "two hundred eight million, nine hundred twenty thousand, four hundred two".