2128632008 has 8 divisors (see below), whose sum is σ = 3991185030. Its totient is φ = 1064316000.

The previous prime is 2128631977. The next prime is 2128632013. The reversal of 2128632008 is 8002368212.

It can be written as a sum of positive squares in only one way, i.e., 1937584324 + 191047684 = 44018^2 + 13822^2 .

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

It is a super-2 number, since 2×2128632008² = 9062148450964224128, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 133039493 + ... + 133039508.

Almost surely, 2^2128632008 is an apocalyptic number.

It is an amenable number.

2128632008 is a deficient number, since it is larger than the sum of its proper divisors (1862553022).

2128632008 is a wasteful number, since it uses less digits than its factorization.

2128632008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266079007 (or 266079003 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 2128632008 is about 46137.1001256039. The cubic root of 2128632008 is about 1286.3728423663.

The spelling of 2128632008 in words is "two billion, one hundred twenty-eight million, six hundred thirty-two thousand, eight".