208020838 has 4 divisors (see below), whose sum is σ = 312031260. Its totient is φ = 104010418.

The previous prime is 208020829. The next prime is 208020847. The reversal of 208020838 is 838020802.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (208020829) and next prime (208020847).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52005208 + ... + 52005211.

It is an arithmetic number, because the mean of its divisors is an integer number (78007815).

Almost surely, 2^208020838 is an apocalyptic number.

208020838 is a deficient number, since it is larger than the sum of its proper divisors (104010422).

208020838 is a wasteful number, since it uses less digits than its factorization.

208020838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104010421.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 208020838 is about 14422.9275114312. The cubic root of 208020838 is about 592.5189990762.

The spelling of 208020838 in words is "two hundred eight million, twenty thousand, eight hundred thirty-eight".