2128504880 has 40 divisors (see below), whose sum is σ = 5119426800. Its totient is φ = 822042368.

The previous prime is 2128504879. The next prime is 2128504891. The reversal of 2128504880 is 884058212.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456410 + ... + 461049.

It is an arithmetic number, because the mean of its divisors is an integer number (127985670).

Almost surely, 2^2128504880 is an apocalyptic number.

2128504880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2128504880 is an abundant number, since it is smaller than the sum of its proper divisors (2990921920).

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

2128504880 is a wasteful number, since it uses less digits than its factorization.

2128504880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917501 (or 917495 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 38.

The square root of 2128504880 is about 46135.7223851540. The cubic root of 2128504880 is about 1286.3472332330.

The spelling of 2128504880 in words is "two billion, one hundred twenty-eight million, five hundred four thousand, eight hundred eighty".