28558285140 has 192 divisors, whose sum is σ = 102126624768. Its totient is φ = 5789414400.

The previous prime is 28558285111. The next prime is 28558285169. The reversal of 28558285140 is 4158285582.

It is an interprime number because it is at equal distance from previous prime (28558285111) and next prime (28558285169).

It is a self number, because there is not a number n which added to its sum of digits gives 28558285140.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 114037 + ... + 264803.

It is an arithmetic number, because the mean of its divisors is an integer number (531909504).

Almost surely, 2^28558285140 is an apocalyptic number.

28558285140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28558285140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51063312384).

28558285140 is an abundant number, since it is smaller than the sum of its proper divisors (73568339628).

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

28558285140 is a wasteful number, since it uses less digits than its factorization.

28558285140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150838 (or 150836 counting only the distinct ones).

The product of its (nonzero) digits is 1024000, while the sum is 48.

The spelling of 28558285140 in words is "twenty-eight billion, five hundred fifty-eight million, two hundred eighty-five thousand, one hundred forty".