28055834420 has 48 divisors (see below), whose sum is σ = 59502014208. Its totient is φ = 11111072640.

The previous prime is 28055834419. The next prime is 28055834431. The reversal of 28055834420 is 2443855082.

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 15 ways as a sum of consecutive naturals, for example, 5863349 + ... + 5868131.

It is an arithmetic number, because the mean of its divisors is an integer number (1239625296).

Almost surely, 2^28055834420 is an apocalyptic number.

28055834420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28055834420 is an abundant number, since it is smaller than the sum of its proper divisors (31446179788).

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

28055834420 is a wasteful number, since it uses less digits than its factorization.

28055834420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7640 (or 7638 counting only the distinct ones).

The product of its (nonzero) digits is 307200, while the sum is 41.

The spelling of 28055834420 in words is "twenty-eight billion, fifty-five million, eight hundred thirty-four thousand, four hundred twenty".