2128028648 has 8 divisors (see below), whose sum is σ = 3990053730. Its totient is φ = 1064014320.

The previous prime is 2128028647. The next prime is 2128028657. The reversal of 2128028648 is 8468208212.

It can be written as a sum of positive squares in only one way, i.e., 1518037444 + 609991204 = 38962^2 + 24698^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2128028641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133001783 + ... + 133001798.

Almost surely, 2^2128028648 is an apocalyptic number.

It is an amenable number.

2128028648 is a deficient number, since it is larger than the sum of its proper divisors (1862025082).

2128028648 is a wasteful number, since it uses less digits than its factorization.

2128028648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266003587 (or 266003583 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 41.

The square root of 2128028648 is about 46130.5608897182. The cubic root of 2128028648 is about 1286.2512902365.

The spelling of 2128028648 in words is "two billion, one hundred twenty-eight million, twenty-eight thousand, six hundred forty-eight".