208445412 has 72 divisors (see below), whose sum is σ = 590417856. Its totient is φ = 56962752.

The previous prime is 208445401. The next prime is 208445437. The reversal of 208445412 is 214544802.

It is a self number, because there is not a number n which added to its sum of digits gives 208445412.

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, 5818 + ... + 21230.

It is an arithmetic number, because the mean of its divisors is an integer number (8200248).

Almost surely, 2^208445412 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 208445412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295208928).

208445412 is an abundant number, since it is smaller than the sum of its proper divisors (381972444).

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

208445412 is a wasteful number, since it uses less digits than its factorization.

208445412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15457 (or 15448 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 208445412 is about 14437.6387266062. The cubic root of 208445412 is about 592.9218388528.

The spelling of 208445412 in words is "two hundred eight million, four hundred forty-five thousand, four hundred twelve".