28857777596928 has 480 divisors, whose sum is σ = 100391949504000. Its totient is φ = 8160059916288.

The previous prime is 28857777596917. The next prime is 28857777596951. The reversal of 28857777596928 is 82969577775882.

It is a happy number.

28857777596928 is a `hidden beast` number, since 2 + 8 + 8 + 5 + 7 + 7 + 7 + 7 + 596 + 9 + 2 + 8 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65485873 + ... + 65925071.

It is an arithmetic number, because the mean of its divisors is an integer number (209149894800).

Almost surely, 2^{28857777596928} is an apocalyptic number.

28857777596928 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 28857777596928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50195974752000).

28857777596928 is an abundant number, since it is smaller than the sum of its proper divisors (71534171907072).

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

28857777596928 is an equidigital number, since it uses as much as digits as its factorization.

28857777596928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439337 (or 439308 counting only the distinct ones).

The product of its digits is 59744563200, while the sum is 90.

The spelling of 28857777596928 in words is "twenty-eight trillion, eight hundred fifty-seven billion, seven hundred seventy-seven million, five hundred ninety-six thousand, nine hundred twenty-eight".