28068116544 has 448 divisors, whose sum is σ = 91403424000. Its totient is φ = 8393932800.

The previous prime is 28068116533. The next prime is 28068116563. The reversal of 28068116544 is 44561186082.

It is a happy number.

28068116544 is a `hidden beast` number, since 28 + 0 + 6 + 81 + 1 + 6 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 28068116544.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 201928827 + ... + 201928965.

It is an arithmetic number, because the mean of its divisors is an integer number (204025500).

Almost surely, 2^28068116544 is an apocalyptic number.

28068116544 is a gapful number since it is divisible by the number (24) 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 28068116544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45701712000).

28068116544 is an abundant number, since it is smaller than the sum of its proper divisors (63335307456).

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

28068116544 is a wasteful number, since it uses less digits than its factorization.

28068116544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 28068116544 in words is "twenty-eight billion, sixty-eight million, one hundred sixteen thousand, five hundred forty-four".