208100290 has 16 divisors (see below), whose sum is σ = 379857600. Its totient is φ = 82067440.

The previous prime is 208100267. The next prime is 208100309. The reversal of 208100290 is 92001802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145840 + ... + 147259.

It is an arithmetic number, because the mean of its divisors is an integer number (23741100).

Almost surely, 2^208100290 is an apocalyptic number.

208100290 is a deficient number, since it is larger than the sum of its proper divisors (171757310).

208100290 is a wasteful number, since it uses less digits than its factorization.

208100290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293177.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 208100290 is about 14425.6816130123. The cubic root of 208100290 is about 592.5944255378.

The spelling of 208100290 in words is "two hundred eight million, one hundred thousand, two hundred ninety".