208250890 has 64 divisors (see below), whose sum is σ = 399748608. Its totient is φ = 78016000.

The previous prime is 208250879. The next prime is 208250897. The reversal of 208250890 is 98052802.

208250890 = T₁₉₈₀ + T₁₉₈₁ + ... + T₂₀₈₀.

It is not an unprimeable number, because it can be changed into a prime (208250897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1946217 + ... + 1946323.

It is an arithmetic number, because the mean of its divisors is an integer number (6246072).

Almost surely, 2^208250890 is an apocalyptic number.

208250890 is a deficient number, since it is larger than the sum of its proper divisors (191497718).

208250890 is a wasteful number, since it uses less digits than its factorization.

208250890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 208250890 is about 14430.9005263012. The cubic root of 208250890 is about 592.7373425270.

The spelling of 208250890 in words is "two hundred eight million, two hundred fifty thousand, eight hundred ninety".