28305337896 has 448 divisors, whose sum is σ = 91967293440. Its totient is φ = 8083152000.

The previous prime is 28305337877. The next prime is 28305337897. The reversal of 28305337896 is 69873350382.

28305337896 is a `hidden beast` number, since 2 + 8 + 30 + 533 + 78 + 9 + 6 = 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 (28305337897) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 85514451 + ... + 85514781.

Almost surely, 2^28305337896 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 28305337896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45983646720).

28305337896 is an abundant number, since it is smaller than the sum of its proper divisors (63661955544).

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

28305337896 is a wasteful number, since it uses less digits than its factorization.

28305337896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440 (or 421 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 28305337896 in words is "twenty-eight billion, three hundred five million, three hundred thirty-seven thousand, eight hundred ninety-six".