3648805128 has 24 divisors (see below), whose sum is σ = 9882180750. Its totient is φ = 1216268352.

The previous prime is 3648805109. The next prime is 3648805133. The reversal of 3648805128 is 8215088463.

It can be written as a sum of positive squares in only one way, i.e., 2463931044 + 1184874084 = 49638^2 + 34422^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 25338853 + ... + 25338996.

Almost surely, 2^3648805128 is an apocalyptic number.

It is an amenable number.

3648805128 is an abundant number, since it is smaller than the sum of its proper divisors (6233375622).

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

3648805128 is a wasteful number, since it uses less digits than its factorization.

3648805128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50677861 (or 50677854 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The square root of 3648805128 is about 60405.3402274998. The cubic root of 3648805128 is about 1539.5136947656.

The spelling of 3648805128 in words is "three billion, six hundred forty-eight million, eight hundred five thousand, one hundred twenty-eight".