2128458520 has 32 divisors (see below), whose sum is σ = 4790542320. Its totient is φ = 851114880.

The previous prime is 2128458499. The next prime is 2128458551. The reversal of 2128458520 is 258548212.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2128458520.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 163450 + ... + 175990.

Almost surely, 2^2128458520 is an apocalyptic number.

2128458520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2128458520 is an abundant number, since it is smaller than the sum of its proper divisors (2662083800).

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

2128458520 is a wasteful number, since it uses less digits than its factorization.

2128458520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16795 (or 16791 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 37.

The square root of 2128458520 is about 46135.2199517895. The cubic root of 2128458520 is about 1286.3378940499.

The spelling of 2128458520 in words is "two billion, one hundred twenty-eight million, four hundred fifty-eight thousand, five hundred twenty".