2208731648 has 90 divisors (see below), whose sum is σ = 4629178323. Its totient is φ = 1052789760.

The previous prime is 2208731639. The next prime is 2208731671. The reversal of 2208731648 is 8461378022.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1104365824 + 1104365824 = 33232^2 + 33232^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33232.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 32966111 + ... + 32966177.

Almost surely, 2^2208731648 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 2208731648

2208731648 is an abundant number, since it is smaller than the sum of its proper divisors (2420446675).

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

2208731648 is an frugal number, since it uses more digits than its factorization.

2208731648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 2208731648 is about 46997.1451047827. The cubic root of 2208731648 is about 1302.3098280050.

It can be divided in two parts, 22087 and 31648, that added together give a palindrome (53735).

The spelling of 2208731648 in words is "two billion, two hundred eight million, seven hundred thirty-one thousand, six hundred forty-eight".