285028571142840 has 512 divisors, whose sum is σ = 1050016608000000. Its totient is φ = 61699968884736.

The previous prime is 285028571142829. The next prime is 285028571142853. The reversal of 285028571142840 is 48241175820582.

It is a super-5 number, since 5×285028571142840⁵ (a number of 73 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 2415662566 + ... + 2415780554.

It is an arithmetic number, because the mean of its divisors is an integer number (2050813687500).

Almost surely, 2^{285028571142840} is an apocalyptic number.

285028571142840 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 285028571142840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (525008304000000).

285028571142840 is an abundant number, since it is smaller than the sum of its proper divisors (764988036857160).

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

285028571142840 is a wasteful number, since it uses less digits than its factorization.

285028571142840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121132 (or 121114 counting only the distinct ones).

The product of its (nonzero) digits is 11468800, while the sum is 57.

The spelling of 285028571142840 in words is "two hundred eighty-five trillion, twenty-eight billion, five hundred seventy-one million, one hundred forty-two thousand, eight hundred forty".