28797043968 has 576 divisors, whose sum is σ = 108033085440. Its totient is φ = 7348838400.

The previous prime is 28797043949. The next prime is 28797043981. The reversal of 28797043968 is 86934079782.

28797043968 is a `hidden beast` number, since 2 + 8 + 79 + 70 + 439 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32465221 + ... + 32466107.

It is an arithmetic number, because the mean of its divisors is an integer number (187557440).

Almost surely, 2^28797043968 is an apocalyptic number.

28797043968 is a gapful number since it is divisible by the number (28) 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 28797043968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54016542720).

28797043968 is an abundant number, since it is smaller than the sum of its proper divisors (79236041472).

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

28797043968 is a wasteful number, since it uses less digits than its factorization.

28797043968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991 (or 971 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 28797043968 in words is "twenty-eight billion, seven hundred ninety-seven million, forty-three thousand, nine hundred sixty-eight".