208706136 has 48 divisors (see below), whose sum is σ = 539199000. Its totient is φ = 67317120.

The previous prime is 208706131. The next prime is 208706149. The reversal of 208706136 is 631607802.

It is a junction number, because it is equal to n+sod(n) for n = 208706097 and 208706106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (208706131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18540 + ... + 27588.

Almost surely, 2^208706136 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 208706136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269599500).

208706136 is an abundant number, since it is smaller than the sum of its proper divisors (330492864).

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

208706136 is a wasteful number, since it uses less digits than its factorization.

208706136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9120 (or 9085 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 208706136 is about 14446.6652207352. The cubic root of 208706136 is about 593.1689451869.

The spelling of 208706136 in words is "two hundred eight million, seven hundred six thousand, one hundred thirty-six".