2143884428 has 12 divisors (see below), whose sum is σ = 4287768912. Its totient is φ = 918807600.

The previous prime is 2143884403. The next prime is 2143884443. The reversal of 2143884428 is 8244883412.

2143884428 is an admirable number.

It is a hoax number, since the sum of its digits (44) 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, 38283623 + ... + 38283678.

It is an arithmetic number, because the mean of its divisors is an integer number (357314076).

Almost surely, 2^2143884428 is an apocalyptic number.

2143884428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2143884428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2143884428 is a wasteful number, since it uses less digits than its factorization.

2143884428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76567312 (or 76567310 counting only the distinct ones).

The product of its digits is 393216, while the sum is 44.

The square root of 2143884428 is about 46302.0996068213. The cubic root of 2143884428 is about 1289.4379756335.

The spelling of 2143884428 in words is "two billion, one hundred forty-three million, eight hundred eighty-four thousand, four hundred twenty-eight".