208040646 has 32 divisors (see below), whose sum is σ = 454608000. Its totient is φ = 62945280.

The previous prime is 208040641. The next prime is 208040647. The reversal of 208040646 is 646040802.

208040646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208040641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48705 + ... + 52803.

It is an arithmetic number, because the mean of its divisors is an integer number (14206500).

Almost surely, 2^208040646 is an apocalyptic number.

208040646 is an abundant number, since it is smaller than the sum of its proper divisors (246567354).

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

208040646 is a wasteful number, since it uses less digits than its factorization.

208040646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 208040646 is about 14423.6141795321. The cubic root of 208040646 is about 592.5378052752.

The spelling of 208040646 in words is "two hundred eight million, forty thousand, six hundred forty-six".