208734804 has 18 divisors (see below), whose sum is σ = 527635290. Its totient is φ = 69578256.

The previous prime is 208734793. The next prime is 208734809. The reversal of 208734804 is 408437802.

It can be written as a sum of positive squares in only one way, i.e., 125888400 + 82846404 = 11220^2 + 9102^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 5798189 = 208734804 / (2 + 0 + 8 + 7 + 3 + 4 + 8 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208734809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2899059 + ... + 2899130.

Almost surely, 2^208734804 is an apocalyptic number.

It is an amenable number.

208734804 is an abundant number, since it is smaller than the sum of its proper divisors (318900486).

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

208734804 is a wasteful number, since it uses less digits than its factorization.

208734804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5798199 (or 5798194 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The square root of 208734804 is about 14447.6573879643. The cubic root of 208734804 is about 593.1961032908.

The spelling of 208734804 in words is "two hundred eight million, seven hundred thirty-four thousand, eight hundred four".