208400208 has 40 divisors (see below), whose sum is σ = 566704800. Its totient is φ = 65810304.

The previous prime is 208400201. The next prime is 208400221. The reversal of 208400208 is 802004802.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208400201) 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, 113343 + ... + 115166.

It is an arithmetic number, because the mean of its divisors is an integer number (14167620).

Almost surely, 2^208400208 is an apocalyptic number.

It is an amenable number.

208400208 is an abundant number, since it is smaller than the sum of its proper divisors (358304592).

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

208400208 is a wasteful number, since it uses less digits than its factorization.

208400208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228539 (or 228533 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 208400208 is about 14436.0731502719. The cubic root of 208400208 is about 592.8789749102.

The spelling of 208400208 in words is "two hundred eight million, four hundred thousand, two hundred eight".