2208761856 has 576 divisors, whose sum is σ = 8279107200. Its totient is φ = 552075264.

The previous prime is 2208761843. The next prime is 2208761857. The reversal of 2208761856 is 6581678022.

2208761856 is a `hidden beast` number, since 2 + 20 + 8 + 7 + 618 + 5 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is not an unprimeable number, because it can be changed into a prime (2208761857) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41674726 + ... + 41674778.

It is an arithmetic number, because the mean of its divisors is an integer number (14373450).

Almost surely, 2^2208761856 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 2208761856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4139553600).

2208761856 is an abundant number, since it is smaller than the sum of its proper divisors (6070345344).

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

2208761856 is a wasteful number, since it uses less digits than its factorization.

2208761856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124 (or 101 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 2208761856 is about 46997.4664849075. The cubic root of 2208761856 is about 1302.3157650467.

The spelling of 2208761856 in words is "two billion, two hundred eight million, seven hundred sixty-one thousand, eight hundred fifty-six".