2188783828 has 24 divisors (see below), whose sum is σ = 4775529024. Its totient is φ = 852772800.

The previous prime is 2188783789. The next prime is 2188783837. The reversal of 2188783828 is 8283878812.

It is a congruent number.

It is an unprimeable number.

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, 3552913 + ... + 3553528.

It is an arithmetic number, because the mean of its divisors is an integer number (198980376).

Almost surely, 2^2188783828 is an apocalyptic number.

2188783828 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2188783828 is an abundant number, since it is smaller than the sum of its proper divisors (2586745196).

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

2188783828 is a wasteful number, since it uses less digits than its factorization.

2188783828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7106463 (or 7106461 counting only the distinct ones).

The product of its digits is 2752512, while the sum is 55.

The square root of 2188783828 is about 46784.4400201605. The cubic root of 2188783828 is about 1298.3774289148.

The spelling of 2188783828 in words is "two billion, one hundred eighty-eight million, seven hundred eighty-three thousand, eight hundred twenty-eight".