28324427533920 has 1152 divisors, whose sum is σ = 113135419837440. Its totient is φ = 6319755509760.

The previous prime is 28324427533847. The next prime is 28324427533939. The reversal of 28324427533920 is 2933572442382.

28324427533920 is a `hidden beast` number, since 2 + 8 + 3 + 244 + 2 + 7 + 5 + 3 + 392 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 57687224875 + ... + 57687225365.

It is an arithmetic number, because the mean of its divisors is an integer number (98207829720).

Almost surely, 2^{28324427533920} is an apocalyptic number.

28324427533920 is a gapful number since it is divisible by the number (20) 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 28324427533920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56567709918720).

28324427533920 is an abundant number, since it is smaller than the sum of its proper divisors (84810992303520).

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

28324427533920 is a wasteful number, since it uses less digits than its factorization.

28324427533920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 54.

The spelling of 28324427533920 in words is "twenty-eight trillion, three hundred twenty-four billion, four hundred twenty-seven million, five hundred thirty-three thousand, nine hundred twenty".