208324728 has 24 divisors (see below), whose sum is σ = 564213000. Its totient is φ = 69441552.

The previous prime is 208324717. The next prime is 208324751. The reversal of 208324728 is 827423802.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 208324692 and 208324701.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 1446628 + ... + 1446771.

It is an arithmetic number, because the mean of its divisors is an integer number (23508875).

Almost surely, 2^208324728 is an apocalyptic number.

It is an amenable number.

208324728 is an abundant number, since it is smaller than the sum of its proper divisors (355888272).

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

208324728 is a wasteful number, since it uses less digits than its factorization.

208324728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2893411 (or 2893404 counting only the distinct ones).

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

The square root of 208324728 is about 14433.4586291713. The cubic root of 208324728 is about 592.8073884353.

The spelling of 208324728 in words is "two hundred eight million, three hundred twenty-four thousand, seven hundred twenty-eight".