2128465580 has 24 divisors (see below), whose sum is σ = 4613965440. Its totient is φ = 823921920.

The previous prime is 2128465571. The next prime is 2128465597. The reversal of 2128465580 is 855648212.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1715885 + ... + 1717124.

It is an arithmetic number, because the mean of its divisors is an integer number (192248560).

Almost surely, 2^2128465580 is an apocalyptic number.

2128465580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2128465580 is an abundant number, since it is smaller than the sum of its proper divisors (2485499860).

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

2128465580 is a wasteful number, since it uses less digits than its factorization.

2128465580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433049 (or 3433047 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 2128465580 is about 46135.2964659381. The cubic root of 2128465580 is about 1286.3393162897.

The spelling of 2128465580 in words is "two billion, one hundred twenty-eight million, four hundred sixty-five thousand, five hundred eighty".