2187122828 has 24 divisors (see below), whose sum is σ = 4421030544. Its totient is φ = 935667200.

The previous prime is 2187122827. The next prime is 2187122843. The reversal of 2187122828 is 8282217812.

It is not an unprimeable number, because it can be changed into a prime (2187122827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1461233 + ... + 1462728.

It is an arithmetic number, because the mean of its divisors is an integer number (184209606).

Almost surely, 2^2187122828 is an apocalyptic number.

It is an amenable number.

2187122828 is an abundant number, since it is smaller than the sum of its proper divisors (2233907716).

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

2187122828 is a wasteful number, since it uses less digits than its factorization.

2187122828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2923993 (or 2923991 counting only the distinct ones).

The product of its digits is 57344, while the sum is 41.

The square root of 2187122828 is about 46766.6850225671. The cubic root of 2187122828 is about 1298.0489130454.

The spelling of 2187122828 in words is "two billion, one hundred eighty-seven million, one hundred twenty-two thousand, eight hundred twenty-eight".