208228692 has 96 divisors (see below), whose sum is σ = 567705600. Its totient is φ = 58181760.

The previous prime is 208228687. The next prime is 208228693. The reversal of 208228692 is 296822802.

It is a self number, because there is not a number n which added to its sum of digits gives 208228692.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208228693) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1397434 + ... + 1397582.

It is an arithmetic number, because the mean of its divisors is an integer number (5913600).

Almost surely, 2^208228692 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 208228692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283852800).

208228692 is an abundant number, since it is smaller than the sum of its proper divisors (359476908).

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

208228692 is a wasteful number, since it uses less digits than its factorization.

208228692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 208228692 is about 14430.1313923332. The cubic root of 208228692 is about 592.7162813107.

The spelling of 208228692 in words is "two hundred eight million, two hundred twenty-eight thousand, six hundred ninety-two".