28065919230 has 192 divisors, whose sum is σ = 76820889600. Its totient is φ = 7371834624.

The previous prime is 28065919229. The next prime is 28065919241. The reversal of 28065919230 is 3291956082.

28065919230 is a `hidden beast` number, since 28 + 0 + 6 + 591 + 9 + 2 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 61413162 + ... + 61413618.

It is an arithmetic number, because the mean of its divisors is an integer number (400108800).

Almost surely, 2^28065919230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28065919230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38410444800).

28065919230 is an abundant number, since it is smaller than the sum of its proper divisors (48754970370).

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

28065919230 is a wasteful number, since it uses less digits than its factorization.

28065919230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 28065919230 in words is "twenty-eight billion, sixty-five million, nine hundred nineteen thousand, two hundred thirty".