208257020 has 24 divisors (see below), whose sum is σ = 444754800. Its totient is φ = 81890432.

The previous prime is 208256957. The next prime is 208257029. The reversal of 208257020 is 20752802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208257029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87065 + ... + 89424.

It is an arithmetic number, because the mean of its divisors is an integer number (18531450).

Almost surely, 2^208257020 is an apocalyptic number.

208257020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208257020 is an abundant number, since it is smaller than the sum of its proper divisors (236497780).

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

208257020 is a wasteful number, since it uses less digits than its factorization.

208257020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176557 (or 176555 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 208257020 is about 14431.1129161960. The cubic root of 208257020 is about 592.7431583392.

The spelling of 208257020 in words is "two hundred eight million, two hundred fifty-seven thousand, twenty".