28068812424444 has 576 divisors, whose sum is σ = 80170997018112. Its totient is φ = 7568275046400.

The previous prime is 28068812424421. The next prime is 28068812424469. The reversal of 28068812424444 is 44442421886082.

It is a super-2 number, since 2×28068812424444² (a number of 28 digits) contains 22 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 191 ways as a sum of consecutive naturals, for example, 7011942147 + ... + 7011946149.

It is an arithmetic number, because the mean of its divisors is an integer number (139185758712).

Almost surely, 2^{28068812424444} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28068812424444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40085498509056).

28068812424444 is an abundant number, since it is smaller than the sum of its proper divisors (52102184593668).

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

28068812424444 is a wasteful number, since it uses less digits than its factorization.

28068812424444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234 (or 4213 counting only the distinct ones).

The product of its (nonzero) digits is 25165824, while the sum is 57.

It can be divided in two parts, 2806881 and 2424444, that added together give a palindrome (5231325).

The spelling of 28068812424444 in words is "twenty-eight trillion, sixty-eight billion, eight hundred twelve million, four hundred twenty-four thousand, four hundred forty-four".