2128776620 has 12 divisors (see below), whose sum is σ = 4470430944. Its totient is φ = 851510640.

The previous prime is 2128776589. The next prime is 2128776673. The reversal of 2128776620 is 266778212.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53219396 + ... + 53219435.

It is an arithmetic number, because the mean of its divisors is an integer number (372535912).

Almost surely, 2^2128776620 is an apocalyptic number.

2128776620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2128776620 is an abundant number, since it is smaller than the sum of its proper divisors (2341654324).

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

2128776620 is a wasteful number, since it uses less digits than its factorization.

2128776620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106438840 (or 106438838 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 2128776620 is about 46138.6672976149. The cubic root of 2128776620 is about 1286.4019723014.

The spelling of 2128776620 in words is "two billion, one hundred twenty-eight million, seven hundred seventy-six thousand, six hundred twenty".