208420672 has 14 divisors (see below), whose sum is σ = 413584898. Its totient is φ = 104210304.

The previous prime is 208420669. The next prime is 208420673. The reversal of 208420672 is 276024802.

It can be written as a sum of positive squares in only one way, i.e., 156350016 + 52070656 = 12504^2 + 7216^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208420673) by changing a digit.

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 as a sum of consecutive naturals, namely, 1628223 + ... + 1628350.

Almost surely, 2^208420672 is an apocalyptic number.

It is an amenable number.

208420672 is a deficient number, since it is larger than the sum of its proper divisors (205164226).

208420672 is an equidigital number, since it uses as much as digits as its factorization.

208420672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3256585 (or 3256575 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 208420672 is about 14436.7819128780. The cubic root of 208420672 is about 592.8983803263.

The spelling of 208420672 in words is "two hundred eight million, four hundred twenty thousand, six hundred seventy-two".