208247994 has 48 divisors (see below), whose sum is σ = 479157120. Its totient is φ = 65139840.

The previous prime is 208247981. The next prime is 208248013. The reversal of 208247994 is 499742802.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 131097 + ... + 132675.

It is an arithmetic number, because the mean of its divisors is an integer number (9982440).

Almost surely, 2^208247994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208247994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239578560).

208247994 is an abundant number, since it is smaller than the sum of its proper divisors (270909126).

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

208247994 is a wasteful number, since it uses less digits than its factorization.

208247994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2035 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 208247994 is about 14430.8001857139. The cubic root of 208247994 is about 592.7345949192.

The spelling of 208247994 in words is "two hundred eight million, two hundred forty-seven thousand, nine hundred ninety-four".