208739328 has 176 divisors, whose sum is σ = 674429184. Its totient is φ = 56033280.

The previous prime is 208739327. The next prime is 208739351. The reversal of 208739328 is 823937802.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 208739328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208739327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 365283 + ... + 365853.

It is an arithmetic number, because the mean of its divisors is an integer number (3831984).

Almost surely, 2^208739328 is an apocalyptic number.

208739328 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208739328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (337214592).

208739328 is an abundant number, since it is smaller than the sum of its proper divisors (465689856).

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

208739328 is a wasteful number, since it uses less digits than its factorization.

208739328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 208739328 is about 14447.8139522905. The cubic root of 208739328 is about 593.2003887921.

The spelling of 208739328 in words is "two hundred eight million, seven hundred thirty-nine thousand, three hundred twenty-eight".