208428036 has 24 divisors (see below), whose sum is σ = 487532640. Its totient is φ = 69304512.

The previous prime is 208428029. The next prime is 208428037. The reversal of 208428036 is 630824802.

It is a junction number, because it is equal to n+sod(n) for n = 208427988 and 208428006.

It is not an unprimeable number, because it can be changed into a prime (208428037) 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 7 ways as a sum of consecutive naturals, for example, 16326 + ... + 26141.

It is an arithmetic number, because the mean of its divisors is an integer number (20313860).

Almost surely, 2^208428036 is an apocalyptic number.

It is an amenable number.

208428036 is an abundant number, since it is smaller than the sum of its proper divisors (279104604).

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

208428036 is a wasteful number, since it uses less digits than its factorization.

208428036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42883 (or 42881 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 208428036 is about 14437.0369536134. The cubic root of 208428036 is about 592.9053630826.

The spelling of 208428036 in words is "two hundred eight million, four hundred twenty-eight thousand, thirty-six".