208017020 has 12 divisors (see below), whose sum is σ = 436835784. Its totient is φ = 83206800.

The previous prime is 208017001. The next prime is 208017031. The reversal of 208017020 is 20710802.

208017020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 10400851 = 208017020 / (2 + 0 + 8 + 0 + 1 + 7 + 0 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 208016983 and 208017001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5200406 + ... + 5200445.

It is an arithmetic number, because the mean of its divisors is an integer number (36402982).

Almost surely, 2^208017020 is an apocalyptic number.

208017020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208017020 is an abundant number, since it is smaller than the sum of its proper divisors (228818764).

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

208017020 is a wasteful number, since it uses less digits than its factorization.

208017020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10400860 (or 10400858 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 208017020 is about 14422.7951521194. The cubic root of 208017020 is about 592.5153740366.

Adding to 208017020 its reverse (20710802), we get a palindrome (228727822).

The spelling of 208017020 in words is "two hundred eight million, seventeen thousand, twenty".