28434820184 has 64 divisors (see below), whose sum is σ = 56728995840. Its totient is φ = 13340033280.

The previous prime is 28434820157. The next prime is 28434820187. The reversal of 28434820184 is 48102843482.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28434820187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1451237 + ... + 1470699.

It is an arithmetic number, because the mean of its divisors is an integer number (886390560).

Almost surely, 2^28434820184 is an apocalyptic number.

It is an amenable number.

28434820184 is a deficient number, since it is larger than the sum of its proper divisors (28294175656).

28434820184 is a wasteful number, since it uses less digits than its factorization.

28434820184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19680 (or 19676 counting only the distinct ones).

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

The spelling of 28434820184 in words is "twenty-eight billion, four hundred thirty-four million, eight hundred twenty thousand, one hundred eighty-four".