208902930 has 32 divisors (see below), whose sum is σ = 502879104. Its totient is φ = 55539456.

The previous prime is 208902923. The next prime is 208902931. The reversal of 208902930 is 39209802.

208902930 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 208902891 and 208902900.

It is not an unprimeable number, because it can be changed into a prime (208902931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222 + ... + 20441.

It is an arithmetic number, because the mean of its divisors is an integer number (15714972).

Almost surely, 2^208902930 is an apocalyptic number.

208902930 is an abundant number, since it is smaller than the sum of its proper divisors (293976174).

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

208902930 is a wasteful number, since it uses less digits than its factorization.

208902930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21010.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 208902930 is about 14453.4746687432. The cubic root of 208902930 is about 593.3553243403.

The spelling of 208902930 in words is "two hundred eight million, nine hundred two thousand, nine hundred thirty".