208487388 has 48 divisors (see below), whose sum is σ = 517061664. Its totient is φ = 65157120.

The previous prime is 208487333. The next prime is 208487407. The reversal of 208487388 is 883784802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55506 + ... + 59142.

It is an arithmetic number, because the mean of its divisors is an integer number (10772118).

Almost surely, 2^208487388 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208487388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (258530832).

208487388 is an abundant number, since it is smaller than the sum of its proper divisors (308574276).

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

208487388 is a wasteful number, since it uses less digits than its factorization.

208487388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3942 (or 3940 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 48.

The square root of 208487388 is about 14439.0923537458. The cubic root of 208487388 is about 592.9616363493.

The spelling of 208487388 in words is "two hundred eight million, four hundred eighty-seven thousand, three hundred eighty-eight".