208955012 has 36 divisors (see below), whose sum is σ = 432370764. Its totient is φ = 88079040.

The previous prime is 208955011. The next prime is 208955029. The reversal of 208955012 is 210559802.

It can be written as a sum of positive squares in 2 ways, for example, as 11383876 + 197571136 = 3374^2 + 14056^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 208955012.

It is not an unprimeable number, because it can be changed into a prime (208955011) 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, 3218 + ... + 20694.

It is an arithmetic number, because the mean of its divisors is an integer number (12010299).

Almost surely, 2^208955012 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 208955012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216185382).

208955012 is an abundant number, since it is smaller than the sum of its proper divisors (223415752).

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

208955012 is a wasteful number, since it uses less digits than its factorization.

208955012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17556 (or 17547 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 208955012 is about 14455.2762685464. The cubic root of 208955012 is about 593.4046304370.

The spelling of 208955012 in words is "two hundred eight million, nine hundred fifty-five thousand, twelve".