208206340 has 24 divisors (see below), whose sum is σ = 440681472. Its totient is φ = 82625760.

The previous prime is 208206331. The next prime is 208206343. The reversal of 208206340 is 43602802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (208206343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38446 + ... + 43525.

It is an arithmetic number, because the mean of its divisors is an integer number (18361728).

Almost surely, 2^208206340 is an apocalyptic number.

208206340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

208206340 is an abundant number, since it is smaller than the sum of its proper divisors (232475132).

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

208206340 is a wasteful number, since it uses less digits than its factorization.

208206340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82107 (or 82105 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 208206340 is about 14429.3568810256. The cubic root of 208206340 is about 592.6950724686.

The spelling of 208206340 in words is "two hundred eight million, two hundred six thousand, three hundred forty".