208485738 has 48 divisors (see below), whose sum is σ = 479920896. Its totient is φ = 67793760.

The previous prime is 208485721. The next prime is 208485743. The reversal of 208485738 is 837584802.

It is a junction number, because it is equal to n+sod(n) for n = 208485693 and 208485702.

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, 14695 + ... + 25157.

It is an arithmetic number, because the mean of its divisors is an integer number (9998352).

Almost surely, 2^208485738 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 208485738, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239960448).

208485738 is an abundant number, since it is smaller than the sum of its proper divisors (271435158).

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

208485738 is a wasteful number, since it uses less digits than its factorization.

208485738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10521 (or 10509 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The square root of 208485738 is about 14439.0352170774. The cubic root of 208485738 is about 592.9600720832.

The spelling of 208485738 in words is "two hundred eight million, four hundred eighty-five thousand, seven hundred thirty-eight".