28568860650 has 384 divisors, whose sum is σ = 89365708800. Its totient is φ = 6648480000.

The previous prime is 28568860633. The next prime is 28568860657. The reversal of 28568860650 is 5606886582.

28568860650 is a `hidden beast` number, since 28 + 5 + 6 + 8 + 8 + 606 + 5 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (28568860657) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 105420015 + ... + 105420285.

It is an arithmetic number, because the mean of its divisors is an integer number (232723200).

Almost surely, 2^28568860650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28568860650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44682854400).

28568860650 is an abundant number, since it is smaller than the sum of its proper divisors (60796848150).

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

28568860650 is a wasteful number, since it uses less digits than its factorization.

28568860650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563 (or 552 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

It can be divided in two parts, 285688606 and 50, that added together give a triangular number (285688656 = T₂₃₉₀₃).

The spelling of 28568860650 in words is "twenty-eight billion, five hundred sixty-eight million, eight hundred sixty thousand, six hundred fifty".