208890630 has 64 divisors (see below), whose sum is σ = 599901120. Its totient is φ = 51418368.

The previous prime is 208890629. The next prime is 208890631. The reversal of 208890630 is 36098802.

208890630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (208890629) and next prime (208890631).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208890631) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26247 + ... + 33266.

It is an arithmetic number, because the mean of its divisors is an integer number (9373455).

Almost surely, 2^208890630 is an apocalyptic number.

208890630 is an abundant number, since it is smaller than the sum of its proper divisors (391010490).

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

208890630 is a wasteful number, since it uses less digits than its factorization.

208890630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59542 (or 59536 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 208890630 is about 14453.0491592605. The cubic root of 208890630 is about 593.3436787182.

The spelling of 208890630 in words is "two hundred eight million, eight hundred ninety thousand, six hundred thirty".