28309946112 has 216 divisors, whose sum is σ = 93427152000. Its totient is φ = 8076257280.

The previous prime is 28309946087. The next prime is 28309946143. The reversal of 28309946112 is 21164990382.

28309946112 is a `hidden beast` number, since 28 + 3 + 0 + 9 + 9 + 4 + 611 + 2 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18885139 + ... + 18886637.

Almost surely, 2^28309946112 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 28309946112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46713576000).

28309946112 is an abundant number, since it is smaller than the sum of its proper divisors (65117205888).

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

28309946112 is a wasteful number, since it uses less digits than its factorization.

28309946112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699 (or 2682 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The spelling of 28309946112 in words is "twenty-eight billion, three hundred nine million, nine hundred forty-six thousand, one hundred twelve".