208000140 has 24 divisors (see below), whose sum is σ = 582400560. Its totient is φ = 55466688.

The previous prime is 208000139. The next prime is 208000181. The reversal of 208000140 is 41000802.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 in 7 ways as a sum of consecutive naturals, for example, 1733275 + ... + 1733394.

It is an arithmetic number, because the mean of its divisors is an integer number (24266690).

Almost surely, 2^208000140 is an apocalyptic number.

208000140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208000140 is an abundant number, since it is smaller than the sum of its proper divisors (374400420).

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

208000140 is a wasteful number, since it uses less digits than its factorization.

208000140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466681 (or 3466679 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 208000140 is about 14422.2099554819. The cubic root of 208000140 is about 592.4993466140.

Adding to 208000140 its reverse (41000802), we get a palindrome (249000942).

The spelling of 208000140 in words is "two hundred eight million, one hundred forty", and thus it is an aban number.